diff --git a/clients/client-accessanalyzer/src/protocols/Aws_restJson1.ts b/clients/client-accessanalyzer/src/protocols/Aws_restJson1.ts
index 32c8fc4e8bda..cc4c15ae1c2c 100644
--- a/clients/client-accessanalyzer/src/protocols/Aws_restJson1.ts
+++ b/clients/client-accessanalyzer/src/protocols/Aws_restJson1.ts
@@ -365,7 +365,7 @@ export const serializeAws_restJson1GetAccessPreviewCommand = async (
     false
   );
   const query: any = map({
-    analyzerArn: [, input.analyzerArn!],
+    analyzerArn: [, __expectNonNull(input.analyzerArn!, `analyzerArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -388,8 +388,8 @@ export const serializeAws_restJson1GetAnalyzedResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/analyzed-resource";
   const query: any = map({
-    analyzerArn: [, input.analyzerArn!],
-    resourceArn: [, input.resourceArn!],
+    analyzerArn: [, __expectNonNull(input.analyzerArn!, `analyzerArn`)],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -470,7 +470,7 @@ export const serializeAws_restJson1GetFindingCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/finding/{id}";
   resolvedPath = __resolvedPath(resolvedPath, input, "id", () => input.id!, "{id}", false);
   const query: any = map({
-    analyzerArn: [, input.analyzerArn!],
+    analyzerArn: [, __expectNonNull(input.analyzerArn!, `analyzerArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -561,7 +561,7 @@ export const serializeAws_restJson1ListAccessPreviewsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/access-preview";
   const query: any = map({
-    analyzerArn: [, input.analyzerArn!],
+    analyzerArn: [, __expectNonNull(input.analyzerArn!, `analyzerArn`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -826,7 +826,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-amp/src/protocols/Aws_restJson1.ts b/clients/client-amp/src/protocols/Aws_restJson1.ts
index 1022f23f7352..16f7c1bd2947 100644
--- a/clients/client-amp/src/protocols/Aws_restJson1.ts
+++ b/clients/client-amp/src/protocols/Aws_restJson1.ts
@@ -573,7 +573,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-amplify/src/protocols/Aws_restJson1.ts b/clients/client-amplify/src/protocols/Aws_restJson1.ts
index f1510b053737..bd29d2e8a99a 100644
--- a/clients/client-amplify/src/protocols/Aws_restJson1.ts
+++ b/clients/client-amplify/src/protocols/Aws_restJson1.ts
@@ -967,7 +967,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-api-gateway/src/protocols/Aws_restJson1.ts b/clients/client-api-gateway/src/protocols/Aws_restJson1.ts
index 45110018b139..4110a49b4b24 100644
--- a/clients/client-api-gateway/src/protocols/Aws_restJson1.ts
+++ b/clients/client-api-gateway/src/protocols/Aws_restJson1.ts
@@ -2393,8 +2393,8 @@ export const serializeAws_restJson1GetUsageCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "usagePlanId", () => input.usagePlanId!, "{usagePlanId}", false);
   const query: any = map({
     keyId: [, input.keyId!],
-    startDate: [, input.startDate!],
-    endDate: [, input.endDate!],
+    startDate: [, __expectNonNull(input.startDate!, `startDate`)],
+    endDate: [, __expectNonNull(input.endDate!, `endDate`)],
     position: [, input.position!],
     limit: [() => input.limit !== void 0, () => input.limit!.toString()],
   });
@@ -2561,7 +2561,7 @@ export const serializeAws_restJson1ImportApiKeysCommand = async (
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/apikeys";
   const query: any = map({
     mode: [, "import"],
-    format: [, input.format!],
+    format: [, __expectNonNull(input.format!, `format`)],
     failonwarnings: [() => input.failOnWarnings !== void 0, () => input.failOnWarnings!.toString()],
   });
   let body: any;
@@ -2993,7 +2993,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-apigatewayv2/src/protocols/Aws_restJson1.ts b/clients/client-apigatewayv2/src/protocols/Aws_restJson1.ts
index 27529487daaf..b4153836682e 100644
--- a/clients/client-apigatewayv2/src/protocols/Aws_restJson1.ts
+++ b/clients/client-apigatewayv2/src/protocols/Aws_restJson1.ts
@@ -1041,7 +1041,7 @@ export const serializeAws_restJson1ExportApiCommand = async (
   const query: any = map({
     exportVersion: [, input.ExportVersion!],
     includeExtensions: [() => input.IncludeExtensions !== void 0, () => input.IncludeExtensions!.toString()],
-    outputType: [, input.OutputType!],
+    outputType: [, __expectNonNull(input.OutputType!, `OutputType`)],
     stageName: [, input.StageName!],
   });
   let body: any;
@@ -1846,7 +1846,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v2/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-app-mesh/src/protocols/Aws_restJson1.ts b/clients/client-app-mesh/src/protocols/Aws_restJson1.ts
index e3b46744a22a..cbe9f5c9f3ae 100644
--- a/clients/client-app-mesh/src/protocols/Aws_restJson1.ts
+++ b/clients/client-app-mesh/src/protocols/Aws_restJson1.ts
@@ -1092,7 +1092,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v20190125/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
     nextToken: [, input.nextToken!],
     limit: [() => input.limit !== void 0, () => input.limit!.toString()],
   });
@@ -1230,7 +1230,7 @@ export const serializeAws_restJson1TagResourceCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v20190125/tag";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -1258,7 +1258,7 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v20190125/untag";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   body = JSON.stringify({
diff --git a/clients/client-appconfig/src/protocols/Aws_restJson1.ts b/clients/client-appconfig/src/protocols/Aws_restJson1.ts
index 8aa09a6b37fa..eb0899d77b1f 100644
--- a/clients/client-appconfig/src/protocols/Aws_restJson1.ts
+++ b/clients/client-appconfig/src/protocols/Aws_restJson1.ts
@@ -686,7 +686,7 @@ export const serializeAws_restJson1GetConfigurationCommand = async (
     false
   );
   const query: any = map({
-    client_id: [, input.ClientId!],
+    client_id: [, __expectNonNull(input.ClientId!, `ClientId`)],
     client_configuration_version: [, input.ClientConfigurationVersion!],
   });
   let body: any;
@@ -1357,7 +1357,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -1631,7 +1634,7 @@ export const serializeAws_restJson1ValidateConfigurationCommand = async (
     false
   );
   const query: any = map({
-    configuration_version: [, input.ConfigurationVersion!],
+    configuration_version: [, __expectNonNull(input.ConfigurationVersion!, `ConfigurationVersion`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-appconfigdata/src/protocols/Aws_restJson1.ts b/clients/client-appconfigdata/src/protocols/Aws_restJson1.ts
index 30cecdb2e4c1..6d4edb5129b4 100644
--- a/clients/client-appconfigdata/src/protocols/Aws_restJson1.ts
+++ b/clients/client-appconfigdata/src/protocols/Aws_restJson1.ts
@@ -43,7 +43,7 @@ export const serializeAws_restJson1GetLatestConfigurationCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/configuration";
   const query: any = map({
-    configuration_token: [, input.ConfigurationToken!],
+    configuration_token: [, __expectNonNull(input.ConfigurationToken!, `ConfigurationToken`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-appflow/src/protocols/Aws_restJson1.ts b/clients/client-appflow/src/protocols/Aws_restJson1.ts
index cecf4464fcbe..0e815ee413dd 100644
--- a/clients/client-appflow/src/protocols/Aws_restJson1.ts
+++ b/clients/client-appflow/src/protocols/Aws_restJson1.ts
@@ -768,7 +768,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-appintegrations/src/protocols/Aws_restJson1.ts b/clients/client-appintegrations/src/protocols/Aws_restJson1.ts
index eb6fd5ceac2f..056470633a00 100644
--- a/clients/client-appintegrations/src/protocols/Aws_restJson1.ts
+++ b/clients/client-appintegrations/src/protocols/Aws_restJson1.ts
@@ -408,7 +408,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-appsync/src/protocols/Aws_restJson1.ts b/clients/client-appsync/src/protocols/Aws_restJson1.ts
index bd16d016fed5..09e8ff513a99 100644
--- a/clients/client-appsync/src/protocols/Aws_restJson1.ts
+++ b/clients/client-appsync/src/protocols/Aws_restJson1.ts
@@ -854,7 +854,7 @@ export const serializeAws_restJson1GetIntrospectionSchemaCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/apis/{apiId}/schema";
   resolvedPath = __resolvedPath(resolvedPath, input, "apiId", () => input.apiId!, "{apiId}", false);
   const query: any = map({
-    format: [, input.format!],
+    format: [, __expectNonNull(input.format!, `format`)],
     includeDirectives: [() => input.includeDirectives !== void 0, () => input.includeDirectives!.toString()],
   });
   let body: any;
@@ -926,7 +926,7 @@ export const serializeAws_restJson1GetTypeCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "apiId", () => input.apiId!, "{apiId}", false);
   resolvedPath = __resolvedPath(resolvedPath, input, "typeName", () => input.typeName!, "{typeName}", false);
   const query: any = map({
-    format: [, input.format!],
+    format: [, __expectNonNull(input.format!, `format`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1151,7 +1151,7 @@ export const serializeAws_restJson1ListTypesCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/apis/{apiId}/types";
   resolvedPath = __resolvedPath(resolvedPath, input, "apiId", () => input.apiId!, "{apiId}", false);
   const query: any = map({
-    format: [, input.format!],
+    format: [, __expectNonNull(input.format!, `format`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -1228,7 +1228,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-auditmanager/src/protocols/Aws_restJson1.ts b/clients/client-auditmanager/src/protocols/Aws_restJson1.ts
index 711938cea7e4..19f25f0842e4 100644
--- a/clients/client-auditmanager/src/protocols/Aws_restJson1.ts
+++ b/clients/client-auditmanager/src/protocols/Aws_restJson1.ts
@@ -664,7 +664,7 @@ export const serializeAws_restJson1DeleteAssessmentFrameworkShareCommand = async
     "/assessmentFrameworkShareRequests/{requestId}";
   resolvedPath = __resolvedPath(resolvedPath, input, "requestId", () => input.requestId!, "{requestId}", false);
   const query: any = map({
-    requestType: [, input.requestType!],
+    requestType: [, __expectNonNull(input.requestType!, `requestType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1348,8 +1348,8 @@ export const serializeAws_restJson1ListAssessmentControlInsightsByControlDomainC
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/insights/controls-by-assessment";
   const query: any = map({
-    controlDomainId: [, input.controlDomainId!],
-    assessmentId: [, input.assessmentId!],
+    controlDomainId: [, __expectNonNull(input.controlDomainId!, `controlDomainId`)],
+    assessmentId: [, __expectNonNull(input.assessmentId!, `assessmentId`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -1374,7 +1374,7 @@ export const serializeAws_restJson1ListAssessmentFrameworksCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/assessmentFrameworks";
   const query: any = map({
-    frameworkType: [, input.frameworkType!],
+    frameworkType: [, __expectNonNull(input.frameworkType!, `frameworkType`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -1400,7 +1400,7 @@ export const serializeAws_restJson1ListAssessmentFrameworkShareRequestsCommand =
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/assessmentFrameworkShareRequests";
   const query: any = map({
-    requestType: [, input.requestType!],
+    requestType: [, __expectNonNull(input.requestType!, `requestType`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -1500,7 +1500,7 @@ export const serializeAws_restJson1ListControlDomainInsightsByAssessmentCommand
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/insights/control-domains-by-assessment";
   const query: any = map({
-    assessmentId: [, input.assessmentId!],
+    assessmentId: [, __expectNonNull(input.assessmentId!, `assessmentId`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -1525,7 +1525,7 @@ export const serializeAws_restJson1ListControlInsightsByControlDomainCommand = a
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/insights/controls";
   const query: any = map({
-    controlDomainId: [, input.controlDomainId!],
+    controlDomainId: [, __expectNonNull(input.controlDomainId!, `controlDomainId`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -1550,7 +1550,7 @@ export const serializeAws_restJson1ListControlsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/controls";
   const query: any = map({
-    controlType: [, input.controlType!],
+    controlType: [, __expectNonNull(input.controlType!, `controlType`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -1575,7 +1575,7 @@ export const serializeAws_restJson1ListKeywordsForDataSourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/dataSourceKeywords";
   const query: any = map({
-    source: [, input.source!],
+    source: [, __expectNonNull(input.source!, `source`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -1750,7 +1750,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-backupstorage/src/protocols/Aws_restJson1.ts b/clients/client-backupstorage/src/protocols/Aws_restJson1.ts
index 85a686826aca..e8ab9825e376 100644
--- a/clients/client-backupstorage/src/protocols/Aws_restJson1.ts
+++ b/clients/client-backupstorage/src/protocols/Aws_restJson1.ts
@@ -223,8 +223,8 @@ export const serializeAws_restJson1NotifyObjectCompleteCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "BackupJobId", () => input.BackupJobId!, "{BackupJobId}", false);
   resolvedPath = __resolvedPath(resolvedPath, input, "UploadId", () => input.UploadId!, "{UploadId}", false);
   const query: any = map({
-    checksum: [, input.ObjectChecksum!],
-    "checksum-algorithm": [, input.ObjectChecksumAlgorithm!],
+    checksum: [, __expectNonNull(input.ObjectChecksum!, `ObjectChecksum`)],
+    "checksum-algorithm": [, __expectNonNull(input.ObjectChecksumAlgorithm!, `ObjectChecksumAlgorithm`)],
     "metadata-string": [, input.MetadataString!],
     "metadata-blob-length": [() => input.MetadataBlobLength !== void 0, () => input.MetadataBlobLength!.toString()],
     "metadata-checksum": [, input.MetadataBlobChecksum!],
@@ -269,9 +269,9 @@ export const serializeAws_restJson1PutChunkCommand = async (
     false
   );
   const query: any = map({
-    length: [() => input.Length !== void 0, () => input.Length!.toString()],
-    checksum: [, input.Checksum!],
-    "checksum-algorithm": [, input.ChecksumAlgorithm!],
+    length: [__expectNonNull(input.Length, `Length`) != null, () => input.Length!.toString()],
+    checksum: [, __expectNonNull(input.Checksum!, `Checksum`)],
+    "checksum-algorithm": [, __expectNonNull(input.ChecksumAlgorithm!, `ChecksumAlgorithm`)],
   });
   let body: any;
   if (input.Data !== undefined) {
diff --git a/clients/client-batch/src/protocols/Aws_restJson1.ts b/clients/client-batch/src/protocols/Aws_restJson1.ts
index a05e320c93b1..bbb2c6c3eebe 100644
--- a/clients/client-batch/src/protocols/Aws_restJson1.ts
+++ b/clients/client-batch/src/protocols/Aws_restJson1.ts
@@ -747,7 +747,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-billingconductor/src/protocols/Aws_restJson1.ts b/clients/client-billingconductor/src/protocols/Aws_restJson1.ts
index dc04236fc167..20a154df1abe 100644
--- a/clients/client-billingconductor/src/protocols/Aws_restJson1.ts
+++ b/clients/client-billingconductor/src/protocols/Aws_restJson1.ts
@@ -887,7 +887,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-braket/src/protocols/Aws_restJson1.ts b/clients/client-braket/src/protocols/Aws_restJson1.ts
index 9f0713fccae3..ca6f949ad2fe 100644
--- a/clients/client-braket/src/protocols/Aws_restJson1.ts
+++ b/clients/client-braket/src/protocols/Aws_restJson1.ts
@@ -406,7 +406,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-chime-sdk-identity/src/protocols/Aws_restJson1.ts b/clients/client-chime-sdk-identity/src/protocols/Aws_restJson1.ts
index dcc50406b039..9ad476ccd93d 100644
--- a/clients/client-chime-sdk-identity/src/protocols/Aws_restJson1.ts
+++ b/clients/client-chime-sdk-identity/src/protocols/Aws_restJson1.ts
@@ -587,7 +587,7 @@ export const serializeAws_restJson1ListAppInstanceUsersCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/app-instance-users";
   const query: any = map({
-    "app-instance-arn": [, input.AppInstanceArn!],
+    "app-instance-arn": [, __expectNonNull(input.AppInstanceArn!, `AppInstanceArn`)],
     "max-results": [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     "next-token": [, input.NextToken!],
   });
@@ -612,7 +612,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    arn: [, input.ResourceARN!],
+    arn: [, __expectNonNull(input.ResourceARN!, `ResourceARN`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-chime-sdk-media-pipelines/src/protocols/Aws_restJson1.ts b/clients/client-chime-sdk-media-pipelines/src/protocols/Aws_restJson1.ts
index c265d23066e6..f988b1d3c265 100644
--- a/clients/client-chime-sdk-media-pipelines/src/protocols/Aws_restJson1.ts
+++ b/clients/client-chime-sdk-media-pipelines/src/protocols/Aws_restJson1.ts
@@ -363,7 +363,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    arn: [, input.ResourceARN!],
+    arn: [, __expectNonNull(input.ResourceARN!, `ResourceARN`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-chime-sdk-meetings/src/protocols/Aws_restJson1.ts b/clients/client-chime-sdk-meetings/src/protocols/Aws_restJson1.ts
index d6cbac047091..cd5a613a11f7 100644
--- a/clients/client-chime-sdk-meetings/src/protocols/Aws_restJson1.ts
+++ b/clients/client-chime-sdk-meetings/src/protocols/Aws_restJson1.ts
@@ -386,7 +386,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    arn: [, input.ResourceARN!],
+    arn: [, __expectNonNull(input.ResourceARN!, `ResourceARN`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-chime-sdk-messaging/src/protocols/Aws_restJson1.ts b/clients/client-chime-sdk-messaging/src/protocols/Aws_restJson1.ts
index f23b2a46cb7b..301e47d86a6c 100644
--- a/clients/client-chime-sdk-messaging/src/protocols/Aws_restJson1.ts
+++ b/clients/client-chime-sdk-messaging/src/protocols/Aws_restJson1.ts
@@ -727,7 +727,7 @@ export const serializeAws_restJson1DescribeChannelMembershipForAppInstanceUserCo
   resolvedPath = __resolvedPath(resolvedPath, input, "ChannelArn", () => input.ChannelArn!, "{ChannelArn}", false);
   const query: any = map({
     scope: [, "app-instance-user-membership"],
-    "app-instance-user-arn": [, input.AppInstanceUserArn!],
+    "app-instance-user-arn": [, __expectNonNull(input.AppInstanceUserArn!, `AppInstanceUserArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -754,7 +754,7 @@ export const serializeAws_restJson1DescribeChannelModeratedByAppInstanceUserComm
   resolvedPath = __resolvedPath(resolvedPath, input, "ChannelArn", () => input.ChannelArn!, "{ChannelArn}", false);
   const query: any = map({
     scope: [, "app-instance-user-moderated-channel"],
-    "app-instance-user-arn": [, input.AppInstanceUserArn!],
+    "app-instance-user-arn": [, __expectNonNull(input.AppInstanceUserArn!, `AppInstanceUserArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -976,7 +976,7 @@ export const serializeAws_restJson1ListChannelFlowsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/channel-flows";
   const query: any = map({
-    "app-instance-arn": [, input.AppInstanceArn!],
+    "app-instance-arn": [, __expectNonNull(input.AppInstanceArn!, `AppInstanceArn`)],
     "max-results": [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     "next-token": [, input.NextToken!],
   });
@@ -1127,7 +1127,7 @@ export const serializeAws_restJson1ListChannelsCommand = async (
   });
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/channels";
   const query: any = map({
-    "app-instance-arn": [, input.AppInstanceArn!],
+    "app-instance-arn": [, __expectNonNull(input.AppInstanceArn!, `AppInstanceArn`)],
     privacy: [, input.Privacy!],
     "max-results": [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     "next-token": [, input.NextToken!],
@@ -1154,7 +1154,7 @@ export const serializeAws_restJson1ListChannelsAssociatedWithChannelFlowCommand
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/channels";
   const query: any = map({
     scope: [, "channel-flow-associations"],
-    "channel-flow-arn": [, input.ChannelFlowArn!],
+    "channel-flow-arn": [, __expectNonNull(input.ChannelFlowArn!, `ChannelFlowArn`)],
     "max-results": [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     "next-token": [, input.NextToken!],
   });
@@ -1235,7 +1235,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    arn: [, input.ResourceARN!],
+    arn: [, __expectNonNull(input.ResourceARN!, `ResourceARN`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-chime-sdk-voice/src/protocols/Aws_restJson1.ts b/clients/client-chime-sdk-voice/src/protocols/Aws_restJson1.ts
index 8a9e1bcf53ba..bfedc9d10280 100644
--- a/clients/client-chime-sdk-voice/src/protocols/Aws_restJson1.ts
+++ b/clients/client-chime-sdk-voice/src/protocols/Aws_restJson1.ts
@@ -1791,7 +1791,7 @@ export const serializeAws_restJson1ListSupportedPhoneNumberCountriesCommand = as
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/phone-number-countries";
   const query: any = map({
-    "product-type": [, input.ProductType!],
+    "product-type": [, __expectNonNull(input.ProductType!, `ProductType`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-chime/src/protocols/Aws_restJson1.ts b/clients/client-chime/src/protocols/Aws_restJson1.ts
index 279133127132..ce8219b1efb7 100644
--- a/clients/client-chime/src/protocols/Aws_restJson1.ts
+++ b/clients/client-chime/src/protocols/Aws_restJson1.ts
@@ -2896,7 +2896,7 @@ export const serializeAws_restJson1DescribeChannelMembershipForAppInstanceUserCo
   resolvedPath = __resolvedPath(resolvedPath, input, "ChannelArn", () => input.ChannelArn!, "{ChannelArn}", false);
   const query: any = map({
     scope: [, "app-instance-user-membership"],
-    "app-instance-user-arn": [, input.AppInstanceUserArn!],
+    "app-instance-user-arn": [, __expectNonNull(input.AppInstanceUserArn!, `AppInstanceUserArn`)],
   });
   let body: any;
   let { hostname: resolvedHostname } = await context.endpoint();
@@ -2930,7 +2930,7 @@ export const serializeAws_restJson1DescribeChannelModeratedByAppInstanceUserComm
   resolvedPath = __resolvedPath(resolvedPath, input, "ChannelArn", () => input.ChannelArn!, "{ChannelArn}", false);
   const query: any = map({
     scope: [, "app-instance-user-moderated-channel"],
-    "app-instance-user-arn": [, input.AppInstanceUserArn!],
+    "app-instance-user-arn": [, __expectNonNull(input.AppInstanceUserArn!, `AppInstanceUserArn`)],
   });
   let body: any;
   let { hostname: resolvedHostname } = await context.endpoint();
@@ -4113,7 +4113,7 @@ export const serializeAws_restJson1ListAppInstanceUsersCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/app-instance-users";
   const query: any = map({
-    "app-instance-arn": [, input.AppInstanceArn!],
+    "app-instance-arn": [, __expectNonNull(input.AppInstanceArn!, `AppInstanceArn`)],
     "max-results": [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     "next-token": [, input.NextToken!],
   });
@@ -4407,7 +4407,7 @@ export const serializeAws_restJson1ListChannelsCommand = async (
   });
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/channels";
   const query: any = map({
-    "app-instance-arn": [, input.AppInstanceArn!],
+    "app-instance-arn": [, __expectNonNull(input.AppInstanceArn!, `AppInstanceArn`)],
     privacy: [, input.Privacy!],
     "max-results": [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     "next-token": [, input.NextToken!],
@@ -4738,7 +4738,7 @@ export const serializeAws_restJson1ListSupportedPhoneNumberCountriesCommand = as
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/phone-number-countries";
   const query: any = map({
-    "product-type": [, input.ProductType!],
+    "product-type": [, __expectNonNull(input.ProductType!, `ProductType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -4761,7 +4761,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    arn: [, input.ResourceARN!],
+    arn: [, __expectNonNull(input.ResourceARN!, `ResourceARN`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-cloudfront/src/protocols/Aws_restXml.ts b/clients/client-cloudfront/src/protocols/Aws_restXml.ts
index 05a1762f2c2a..0c68066dfe79 100644
--- a/clients/client-cloudfront/src/protocols/Aws_restXml.ts
+++ b/clients/client-cloudfront/src/protocols/Aws_restXml.ts
@@ -654,7 +654,7 @@ export const serializeAws_restXmlAssociateAliasCommand = async (
     false
   );
   const query: any = map({
-    Alias: [, input.Alias!],
+    Alias: [, __expectNonNull(input.Alias!, `Alias`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2428,8 +2428,8 @@ export const serializeAws_restXmlListConflictingAliasesCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2020-05-31/conflicting-alias";
   const query: any = map({
-    DistributionId: [, input.DistributionId!],
-    Alias: [, input.Alias!],
+    DistributionId: [, __expectNonNull(input.DistributionId!, `DistributionId`)],
+    Alias: [, __expectNonNull(input.Alias!, `Alias`)],
     Marker: [, input.Marker!],
     MaxItems: [() => input.MaxItems !== void 0, () => input.MaxItems!.toString()],
   });
@@ -2988,7 +2988,7 @@ export const serializeAws_restXmlListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2020-05-31/tagging";
   const query: any = map({
-    Resource: [, input.Resource!],
+    Resource: [, __expectNonNull(input.Resource!, `Resource`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -3037,7 +3037,7 @@ export const serializeAws_restXmlTagResourceCommand = async (
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2020-05-31/tagging";
   const query: any = map({
     Operation: [, "Tag"],
-    Resource: [, input.Resource!],
+    Resource: [, __expectNonNull(input.Resource!, `Resource`)],
   });
   let body: any;
   if (input.Tags !== undefined) {
@@ -3109,7 +3109,7 @@ export const serializeAws_restXmlUntagResourceCommand = async (
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2020-05-31/tagging";
   const query: any = map({
     Operation: [, "Untag"],
-    Resource: [, input.Resource!],
+    Resource: [, __expectNonNull(input.Resource!, `Resource`)],
   });
   let body: any;
   if (input.TagKeys !== undefined) {
diff --git a/clients/client-cloudsearch-domain/src/protocols/Aws_restJson1.ts b/clients/client-cloudsearch-domain/src/protocols/Aws_restJson1.ts
index 15a1600456b9..9464a621db07 100644
--- a/clients/client-cloudsearch-domain/src/protocols/Aws_restJson1.ts
+++ b/clients/client-cloudsearch-domain/src/protocols/Aws_restJson1.ts
@@ -52,7 +52,7 @@ export const serializeAws_restJson1SearchCommand = async (
     fq: [, input.filterQuery!],
     highlight: [, input.highlight!],
     partial: [() => input.partial !== void 0, () => input.partial!.toString()],
-    q: [, input.query!],
+    q: [, __expectNonNull(input.query!, `query`)],
     "q.options": [, input.queryOptions!],
     "q.parser": [, input.queryParser!],
     return: [, input.return!],
@@ -84,8 +84,8 @@ export const serializeAws_restJson1SuggestCommand = async (
   const query: any = map({
     format: [, "sdk"],
     pretty: [, "true"],
-    q: [, input.query!],
-    suggester: [, input.suggester!],
+    q: [, __expectNonNull(input.query!, `query`)],
+    suggester: [, __expectNonNull(input.suggester!, `suggester`)],
     size: [() => input.size !== void 0, () => input.size!.toString()],
   });
   let body: any;
diff --git a/clients/client-codeartifact/src/protocols/Aws_restJson1.ts b/clients/client-codeartifact/src/protocols/Aws_restJson1.ts
index f188899f5ced..10b2979f8010 100644
--- a/clients/client-codeartifact/src/protocols/Aws_restJson1.ts
+++ b/clients/client-codeartifact/src/protocols/Aws_restJson1.ts
@@ -169,10 +169,10 @@ export const serializeAws_restJson1AssociateExternalConnectionCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/repository/external-connection";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    "external-connection": [, input.externalConnection!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    "external-connection": [, __expectNonNull(input.externalConnection!, `externalConnection`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -198,13 +198,13 @@ export const serializeAws_restJson1CopyPackageVersionsCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package/versions/copy";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    "source-repository": [, input.sourceRepository!],
-    "destination-repository": [, input.destinationRepository!],
-    format: [, input.format!],
+    "source-repository": [, __expectNonNull(input.sourceRepository!, `sourceRepository`)],
+    "destination-repository": [, __expectNonNull(input.destinationRepository!, `destinationRepository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
+    package: [, __expectNonNull(input.package!, `package`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -237,7 +237,7 @@ export const serializeAws_restJson1CreateDomainCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/domain";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -266,9 +266,9 @@ export const serializeAws_restJson1CreateRepositoryCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/repository";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -298,7 +298,7 @@ export const serializeAws_restJson1DeleteDomainCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/domain";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
   });
   let body: any;
@@ -323,7 +323,7 @@ export const serializeAws_restJson1DeleteDomainPermissionsPolicyCommand = async
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/domain/permissions/policy";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
     "policy-revision": [, input.policyRevision!],
   });
@@ -351,12 +351,12 @@ export const serializeAws_restJson1DeletePackageVersionsCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package/versions/delete";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
+    package: [, __expectNonNull(input.package!, `package`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -383,9 +383,9 @@ export const serializeAws_restJson1DeleteRepositoryCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/repository";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -409,9 +409,9 @@ export const serializeAws_restJson1DeleteRepositoryPermissionsPolicyCommand = as
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/repository/permissions/policies";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
     "policy-revision": [, input.policyRevision!],
   });
   let body: any;
@@ -435,7 +435,7 @@ export const serializeAws_restJson1DescribeDomainCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/domain";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
   });
   let body: any;
@@ -459,12 +459,12 @@ export const serializeAws_restJson1DescribePackageCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
+    package: [, __expectNonNull(input.package!, `package`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -487,13 +487,13 @@ export const serializeAws_restJson1DescribePackageVersionCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package/version";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
-    version: [, input.packageVersion!],
+    package: [, __expectNonNull(input.package!, `package`)],
+    version: [, __expectNonNull(input.packageVersion!, `packageVersion`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -516,9 +516,9 @@ export const serializeAws_restJson1DescribeRepositoryCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/repository";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -542,10 +542,10 @@ export const serializeAws_restJson1DisassociateExternalConnectionCommand = async
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/repository/external-connection";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    "external-connection": [, input.externalConnection!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    "external-connection": [, __expectNonNull(input.externalConnection!, `externalConnection`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -571,12 +571,12 @@ export const serializeAws_restJson1DisposePackageVersionsCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package/versions/dispose";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
+    package: [, __expectNonNull(input.package!, `package`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -607,7 +607,7 @@ export const serializeAws_restJson1GetAuthorizationTokenCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/authorization-token";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
     duration: [() => input.durationSeconds !== void 0, () => input.durationSeconds!.toString()],
   });
@@ -633,7 +633,7 @@ export const serializeAws_restJson1GetDomainPermissionsPolicyCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/domain/permissions/policy";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
   });
   let body: any;
@@ -658,14 +658,14 @@ export const serializeAws_restJson1GetPackageVersionAssetCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package/version/asset";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
-    version: [, input.packageVersion!],
-    asset: [, input.asset!],
+    package: [, __expectNonNull(input.package!, `package`)],
+    version: [, __expectNonNull(input.packageVersion!, `packageVersion`)],
+    asset: [, __expectNonNull(input.asset!, `asset`)],
     revision: [, input.packageVersionRevision!],
   });
   let body: any;
@@ -690,13 +690,13 @@ export const serializeAws_restJson1GetPackageVersionReadmeCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package/version/readme";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
-    version: [, input.packageVersion!],
+    package: [, __expectNonNull(input.package!, `package`)],
+    version: [, __expectNonNull(input.packageVersion!, `packageVersion`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -720,10 +720,10 @@ export const serializeAws_restJson1GetRepositoryEndpointCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/repository/endpoint";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -747,9 +747,9 @@ export const serializeAws_restJson1GetRepositoryPermissionsPolicyCommand = async
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/repository/permissions/policy";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -797,9 +797,9 @@ export const serializeAws_restJson1ListPackagesCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/packages";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
     format: [, input.format!],
     namespace: [, input.namespace!],
     "package-prefix": [, input.packagePrefix!],
@@ -830,13 +830,13 @@ export const serializeAws_restJson1ListPackageVersionAssetsCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package/version/assets";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
-    version: [, input.packageVersion!],
+    package: [, __expectNonNull(input.package!, `package`)],
+    version: [, __expectNonNull(input.packageVersion!, `packageVersion`)],
     "max-results": [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     "next-token": [, input.nextToken!],
   });
@@ -862,13 +862,13 @@ export const serializeAws_restJson1ListPackageVersionDependenciesCommand = async
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package/version/dependencies";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
-    version: [, input.packageVersion!],
+    package: [, __expectNonNull(input.package!, `package`)],
+    version: [, __expectNonNull(input.packageVersion!, `packageVersion`)],
     "next-token": [, input.nextToken!],
   });
   let body: any;
@@ -892,12 +892,12 @@ export const serializeAws_restJson1ListPackageVersionsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package/versions";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
+    package: [, __expectNonNull(input.package!, `package`)],
     status: [, input.status!],
     sortBy: [, input.sortBy!],
     "max-results": [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
@@ -951,7 +951,7 @@ export const serializeAws_restJson1ListRepositoriesInDomainCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/domain/repositories";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
     "administrator-account": [, input.administratorAccount!],
     "repository-prefix": [, input.repositoryPrefix!],
@@ -979,7 +979,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1032,12 +1032,12 @@ export const serializeAws_restJson1PutPackageOriginConfigurationCommand = async
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
+    package: [, __expectNonNull(input.package!, `package`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -1068,9 +1068,9 @@ export const serializeAws_restJson1PutRepositoryPermissionsPolicyCommand = async
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/repository/permissions/policy";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -1099,7 +1099,7 @@ export const serializeAws_restJson1TagResourceCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/tag";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -1127,7 +1127,7 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/untag";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -1156,12 +1156,12 @@ export const serializeAws_restJson1UpdatePackageVersionsStatusCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/package/versions/update_status";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
-    format: [, input.format!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
+    format: [, __expectNonNull(input.format!, `format`)],
     namespace: [, input.namespace!],
-    package: [, input.package!],
+    package: [, __expectNonNull(input.package!, `package`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -1194,9 +1194,9 @@ export const serializeAws_restJson1UpdateRepositoryCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/repository";
   const query: any = map({
-    domain: [, input.domain!],
+    domain: [, __expectNonNull(input.domain!, `domain`)],
     "domain-owner": [, input.domainOwner!],
-    repository: [, input.repository!],
+    repository: [, __expectNonNull(input.repository!, `repository`)],
   });
   let body: any;
   body = JSON.stringify({
diff --git a/clients/client-codeguru-reviewer/src/protocols/Aws_restJson1.ts b/clients/client-codeguru-reviewer/src/protocols/Aws_restJson1.ts
index 45162254b2c5..c1131c449ec5 100644
--- a/clients/client-codeguru-reviewer/src/protocols/Aws_restJson1.ts
+++ b/clients/client-codeguru-reviewer/src/protocols/Aws_restJson1.ts
@@ -202,7 +202,7 @@ export const serializeAws_restJson1DescribeRecommendationFeedbackCommand = async
     false
   );
   const query: any = map({
-    RecommendationId: [, input.RecommendationId!],
+    RecommendationId: [, __expectNonNull(input.RecommendationId!, `RecommendationId`)],
     UserId: [, input.UserId!],
   });
   let body: any;
@@ -291,7 +291,7 @@ export const serializeAws_restJson1ListCodeReviewsCommand = async (
       () => input.RepositoryNames !== void 0,
       () => (input.RepositoryNames! || []).map((_entry) => _entry as any),
     ],
-    Type: [, input.Type!],
+    Type: [, __expectNonNull(input.Type!, `Type`)],
     MaxResults: [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     NextToken: [, input.NextToken!],
   });
@@ -492,7 +492,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-codeguruprofiler/src/protocols/Aws_restJson1.ts b/clients/client-codeguruprofiler/src/protocols/Aws_restJson1.ts
index bcff52ba4f8d..b89bcd3cb0d3 100644
--- a/clients/client-codeguruprofiler/src/protocols/Aws_restJson1.ts
+++ b/clients/client-codeguruprofiler/src/protocols/Aws_restJson1.ts
@@ -237,7 +237,7 @@ export const serializeAws_restJson1CreateProfilingGroupCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/profilingGroups";
   const query: any = map({
-    clientToken: [, input.clientToken!],
+    clientToken: [, __expectNonNull(input.clientToken!, `clientToken`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -460,10 +460,13 @@ export const serializeAws_restJson1GetRecommendationsCommand = async (
   );
   const query: any = map({
     startTime: [
-      () => input.startTime !== void 0,
+      __expectNonNull(input.startTime, `startTime`) != null,
       () => (input.startTime!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    endTime: [() => input.endTime !== void 0, () => (input.endTime!.toISOString().split(".")[0] + "Z").toString()],
+    endTime: [
+      __expectNonNull(input.endTime, `endTime`) != null,
+      () => (input.endTime!.toISOString().split(".")[0] + "Z").toString(),
+    ],
     locale: [, input.locale!],
   });
   let body: any;
@@ -498,10 +501,13 @@ export const serializeAws_restJson1ListFindingsReportsCommand = async (
   );
   const query: any = map({
     startTime: [
-      () => input.startTime !== void 0,
+      __expectNonNull(input.startTime, `startTime`) != null,
       () => (input.startTime!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    endTime: [() => input.endTime !== void 0, () => (input.endTime!.toISOString().split(".")[0] + "Z").toString()],
+    endTime: [
+      __expectNonNull(input.endTime, `endTime`) != null,
+      () => (input.endTime!.toISOString().split(".")[0] + "Z").toString(),
+    ],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     dailyReportsOnly: [() => input.dailyReportsOnly !== void 0, () => input.dailyReportsOnly!.toString()],
@@ -538,11 +544,14 @@ export const serializeAws_restJson1ListProfileTimesCommand = async (
   );
   const query: any = map({
     startTime: [
-      () => input.startTime !== void 0,
+      __expectNonNull(input.startTime, `startTime`) != null,
       () => (input.startTime!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    endTime: [() => input.endTime !== void 0, () => (input.endTime!.toISOString().split(".")[0] + "Z").toString()],
-    period: [, input.period!],
+    endTime: [
+      __expectNonNull(input.endTime, `endTime`) != null,
+      () => (input.endTime!.toISOString().split(".")[0] + "Z").toString(),
+    ],
+    period: [, __expectNonNull(input.period!, `period`)],
     orderBy: [, input.orderBy!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     nextToken: [, input.nextToken!],
@@ -728,7 +737,7 @@ export const serializeAws_restJson1RemovePermissionCommand = async (
   );
   resolvedPath = __resolvedPath(resolvedPath, input, "actionGroup", () => input.actionGroup!, "{actionGroup}", false);
   const query: any = map({
-    revisionId: [, input.revisionId!],
+    revisionId: [, __expectNonNull(input.revisionId!, `revisionId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -820,7 +829,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-codestar-notifications/src/protocols/Aws_restJson1.ts b/clients/client-codestar-notifications/src/protocols/Aws_restJson1.ts
index 2dd16340a947..2563a4d406d4 100644
--- a/clients/client-codestar-notifications/src/protocols/Aws_restJson1.ts
+++ b/clients/client-codestar-notifications/src/protocols/Aws_restJson1.ts
@@ -367,7 +367,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/untagResource/{Arn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "Arn", () => input.Arn!, "{Arn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-connect/src/protocols/Aws_restJson1.ts b/clients/client-connect/src/protocols/Aws_restJson1.ts
index 832eb62f08e4..f3e2b5b6257f 100644
--- a/clients/client-connect/src/protocols/Aws_restJson1.ts
+++ b/clients/client-connect/src/protocols/Aws_restJson1.ts
@@ -2070,7 +2070,7 @@ export const serializeAws_restJson1DescribeInstanceStorageConfigCommand = async
     false
   );
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2366,7 +2366,7 @@ export const serializeAws_restJson1DisassociateApprovedOriginCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/instance/{InstanceId}/approved-origin";
   resolvedPath = __resolvedPath(resolvedPath, input, "InstanceId", () => input.InstanceId!, "{InstanceId}", false);
   const query: any = map({
-    origin: [, input.Origin!],
+    origin: [, __expectNonNull(input.Origin!, `Origin`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2427,7 +2427,7 @@ export const serializeAws_restJson1DisassociateInstanceStorageConfigCommand = as
     false
   );
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2452,7 +2452,7 @@ export const serializeAws_restJson1DisassociateLambdaFunctionCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/instance/{InstanceId}/lambda-function";
   resolvedPath = __resolvedPath(resolvedPath, input, "InstanceId", () => input.InstanceId!, "{InstanceId}", false);
   const query: any = map({
-    functionArn: [, input.FunctionArn!],
+    functionArn: [, __expectNonNull(input.FunctionArn!, `FunctionArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2477,8 +2477,8 @@ export const serializeAws_restJson1DisassociateLexBotCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/instance/{InstanceId}/lex-bot";
   resolvedPath = __resolvedPath(resolvedPath, input, "InstanceId", () => input.InstanceId!, "{InstanceId}", false);
   const query: any = map({
-    botName: [, input.BotName!],
-    lexRegion: [, input.LexRegion!],
+    botName: [, __expectNonNull(input.BotName!, `BotName`)],
+    lexRegion: [, __expectNonNull(input.LexRegion!, `LexRegion`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2511,7 +2511,7 @@ export const serializeAws_restJson1DisassociatePhoneNumberContactFlowCommand = a
     false
   );
   const query: any = map({
-    instanceId: [, input.InstanceId!],
+    instanceId: [, __expectNonNull(input.InstanceId!, `InstanceId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2918,7 +2918,7 @@ export const serializeAws_restJson1ListBotsCommand = async (
   const query: any = map({
     nextToken: [, input.NextToken!],
     maxResults: [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
-    lexVersion: [, input.LexVersion!],
+    lexVersion: [, __expectNonNull(input.LexVersion!, `LexVersion`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -3004,7 +3004,7 @@ export const serializeAws_restJson1ListContactReferencesCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "ContactId", () => input.ContactId!, "{ContactId}", false);
   const query: any = map({
     referenceTypes: [
-      () => input.ReferenceTypes !== void 0,
+      __expectNonNull(input.ReferenceTypes, `ReferenceTypes`) != null,
       () => (input.ReferenceTypes! || []).map((_entry) => _entry as any),
     ],
     nextToken: [, input.NextToken!],
@@ -3136,7 +3136,7 @@ export const serializeAws_restJson1ListInstanceStorageConfigsCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/instance/{InstanceId}/storage-configs";
   resolvedPath = __resolvedPath(resolvedPath, input, "InstanceId", () => input.InstanceId!, "{InstanceId}", false);
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
     nextToken: [, input.NextToken!],
     maxResults: [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
   });
@@ -4406,7 +4406,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -4815,7 +4818,7 @@ export const serializeAws_restJson1UpdateInstanceStorageConfigCommand = async (
     false
   );
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
   });
   let body: any;
   body = JSON.stringify({
diff --git a/clients/client-connectcampaigns/src/protocols/Aws_restJson1.ts b/clients/client-connectcampaigns/src/protocols/Aws_restJson1.ts
index 300ab9725627..0d120d48cb70 100644
--- a/clients/client-connectcampaigns/src/protocols/Aws_restJson1.ts
+++ b/clients/client-connectcampaigns/src/protocols/Aws_restJson1.ts
@@ -558,7 +558,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{arn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "arn", () => input.arn!, "{arn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-connectcases/src/protocols/Aws_restJson1.ts b/clients/client-connectcases/src/protocols/Aws_restJson1.ts
index 44f1cc85a525..eb798b4d970c 100644
--- a/clients/client-connectcases/src/protocols/Aws_restJson1.ts
+++ b/clients/client-connectcases/src/protocols/Aws_restJson1.ts
@@ -759,7 +759,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{arn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "arn", () => input.arn!, "{arn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-customer-profiles/src/protocols/Aws_restJson1.ts b/clients/client-customer-profiles/src/protocols/Aws_restJson1.ts
index f720ca34a50b..ec2c89012efd 100644
--- a/clients/client-customer-profiles/src/protocols/Aws_restJson1.ts
+++ b/clients/client-customer-profiles/src/protocols/Aws_restJson1.ts
@@ -1175,7 +1175,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-databrew/src/protocols/Aws_restJson1.ts b/clients/client-databrew/src/protocols/Aws_restJson1.ts
index 92b30e38263e..cea99ff15e85 100644
--- a/clients/client-databrew/src/protocols/Aws_restJson1.ts
+++ b/clients/client-databrew/src/protocols/Aws_restJson1.ts
@@ -808,7 +808,7 @@ export const serializeAws_restJson1ListRecipeVersionsCommand = async (
   const query: any = map({
     maxResults: [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     nextToken: [, input.NextToken!],
-    name: [, input.Name!],
+    name: [, __expectNonNull(input.Name!, `Name`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1051,7 +1051,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-dataexchange/src/protocols/Aws_restJson1.ts b/clients/client-dataexchange/src/protocols/Aws_restJson1.ts
index ef25f0ebd72b..3af06faa4961 100644
--- a/clients/client-dataexchange/src/protocols/Aws_restJson1.ts
+++ b/clients/client-dataexchange/src/protocols/Aws_restJson1.ts
@@ -722,7 +722,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-detective/src/protocols/Aws_restJson1.ts b/clients/client-detective/src/protocols/Aws_restJson1.ts
index c9434d001e2c..3bad40e1eb30 100644
--- a/clients/client-detective/src/protocols/Aws_restJson1.ts
+++ b/clients/client-detective/src/protocols/Aws_restJson1.ts
@@ -633,7 +633,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-dlm/src/protocols/Aws_restJson1.ts b/clients/client-dlm/src/protocols/Aws_restJson1.ts
index 3c981829e69d..b59e43997b66 100644
--- a/clients/client-dlm/src/protocols/Aws_restJson1.ts
+++ b/clients/client-dlm/src/protocols/Aws_restJson1.ts
@@ -229,7 +229,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-drs/src/protocols/Aws_restJson1.ts b/clients/client-drs/src/protocols/Aws_restJson1.ts
index 357fce71f245..638d7bd3f729 100644
--- a/clients/client-drs/src/protocols/Aws_restJson1.ts
+++ b/clients/client-drs/src/protocols/Aws_restJson1.ts
@@ -919,7 +919,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-ebs/src/protocols/Aws_restJson1.ts b/clients/client-ebs/src/protocols/Aws_restJson1.ts
index da966e222e5f..fb2870f6875c 100644
--- a/clients/client-ebs/src/protocols/Aws_restJson1.ts
+++ b/clients/client-ebs/src/protocols/Aws_restJson1.ts
@@ -92,7 +92,7 @@ export const serializeAws_restJson1GetSnapshotBlockCommand = async (
     false
   );
   const query: any = map({
-    blockToken: [, input.BlockToken!],
+    blockToken: [, __expectNonNull(input.BlockToken!, `BlockToken`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-efs/src/protocols/Aws_restJson1.ts b/clients/client-efs/src/protocols/Aws_restJson1.ts
index ba7297c9b5cc..2e87761e59be 100644
--- a/clients/client-efs/src/protocols/Aws_restJson1.ts
+++ b/clients/client-efs/src/protocols/Aws_restJson1.ts
@@ -1010,7 +1010,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2015-02-01/resource-tags/{ResourceId}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceId", () => input.ResourceId!, "{ResourceId}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-eks/src/protocols/Aws_restJson1.ts b/clients/client-eks/src/protocols/Aws_restJson1.ts
index 1f1770e55739..1b141281929d 100644
--- a/clients/client-eks/src/protocols/Aws_restJson1.ts
+++ b/clients/client-eks/src/protocols/Aws_restJson1.ts
@@ -968,7 +968,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-elastic-inference/src/protocols/Aws_restJson1.ts b/clients/client-elastic-inference/src/protocols/Aws_restJson1.ts
index 2d2efa624c56..db8b148552a8 100644
--- a/clients/client-elastic-inference/src/protocols/Aws_restJson1.ts
+++ b/clients/client-elastic-inference/src/protocols/Aws_restJson1.ts
@@ -183,7 +183,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-elasticsearch-service/src/protocols/Aws_restJson1.ts b/clients/client-elasticsearch-service/src/protocols/Aws_restJson1.ts
index d8fd49c6736f..8019de483fa7 100644
--- a/clients/client-elasticsearch-service/src/protocols/Aws_restJson1.ts
+++ b/clients/client-elasticsearch-service/src/protocols/Aws_restJson1.ts
@@ -1295,7 +1295,7 @@ export const serializeAws_restJson1ListTagsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2015-01-01/tags";
   const query: any = map({
-    arn: [, input.ARN!],
+    arn: [, __expectNonNull(input.ARN!, `ARN`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-emr-containers/src/protocols/Aws_restJson1.ts b/clients/client-emr-containers/src/protocols/Aws_restJson1.ts
index 10806f7e5ce3..5e7d3d5a71c6 100644
--- a/clients/client-emr-containers/src/protocols/Aws_restJson1.ts
+++ b/clients/client-emr-containers/src/protocols/Aws_restJson1.ts
@@ -654,7 +654,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-emr-serverless/src/protocols/Aws_restJson1.ts b/clients/client-emr-serverless/src/protocols/Aws_restJson1.ts
index ed2885a66482..1443b29128b7 100644
--- a/clients/client-emr-serverless/src/protocols/Aws_restJson1.ts
+++ b/clients/client-emr-serverless/src/protocols/Aws_restJson1.ts
@@ -481,7 +481,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-evidently/src/protocols/Aws_restJson1.ts b/clients/client-evidently/src/protocols/Aws_restJson1.ts
index 510e9ca793fc..009e4f3660d8 100644
--- a/clients/client-evidently/src/protocols/Aws_restJson1.ts
+++ b/clients/client-evidently/src/protocols/Aws_restJson1.ts
@@ -753,7 +753,7 @@ export const serializeAws_restJson1ListSegmentReferencesCommand = async (
   const query: any = map({
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     nextToken: [, input.nextToken!],
-    type: [, input.type!],
+    type: [, __expectNonNull(input.type!, `type`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1015,7 +1015,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-finspace-data/src/protocols/Aws_restJson1.ts b/clients/client-finspace-data/src/protocols/Aws_restJson1.ts
index ced70ce5dccb..8721dfedac10 100644
--- a/clients/client-finspace-data/src/protocols/Aws_restJson1.ts
+++ b/clients/client-finspace-data/src/protocols/Aws_restJson1.ts
@@ -575,7 +575,7 @@ export const serializeAws_restJson1GetProgrammaticAccessCredentialsCommand = asy
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/credentials/programmatic";
   const query: any = map({
     durationInMinutes: [() => input.durationInMinutes !== void 0, () => input.durationInMinutes!.toString()],
-    environmentId: [, input.environmentId!],
+    environmentId: [, __expectNonNull(input.environmentId!, `environmentId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -719,7 +719,7 @@ export const serializeAws_restJson1ListPermissionGroupsCommand = async (
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/permission-group";
   const query: any = map({
     nextToken: [, input.nextToken!],
-    maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
+    maxResults: [__expectNonNull(input.maxResults, `maxResults`) != null, () => input.maxResults!.toString()],
   });
   let body: any;
   return new __HttpRequest({
@@ -745,7 +745,7 @@ export const serializeAws_restJson1ListPermissionGroupsByUserCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "userId", () => input.userId!, "{userId}", false);
   const query: any = map({
     nextToken: [, input.nextToken!],
-    maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
+    maxResults: [__expectNonNull(input.maxResults, `maxResults`) != null, () => input.maxResults!.toString()],
   });
   let body: any;
   return new __HttpRequest({
@@ -769,7 +769,7 @@ export const serializeAws_restJson1ListUsersCommand = async (
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/user";
   const query: any = map({
     nextToken: [, input.nextToken!],
-    maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
+    maxResults: [__expectNonNull(input.maxResults, `maxResults`) != null, () => input.maxResults!.toString()],
   });
   let body: any;
   return new __HttpRequest({
@@ -803,7 +803,7 @@ export const serializeAws_restJson1ListUsersByPermissionGroupCommand = async (
   );
   const query: any = map({
     nextToken: [, input.nextToken!],
-    maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
+    maxResults: [__expectNonNull(input.maxResults, `maxResults`) != null, () => input.maxResults!.toString()],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-finspace/src/protocols/Aws_restJson1.ts b/clients/client-finspace/src/protocols/Aws_restJson1.ts
index 7357fcd2622e..b613d97115e9 100644
--- a/clients/client-finspace/src/protocols/Aws_restJson1.ts
+++ b/clients/client-finspace/src/protocols/Aws_restJson1.ts
@@ -211,7 +211,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-gamesparks/src/protocols/Aws_restJson1.ts b/clients/client-gamesparks/src/protocols/Aws_restJson1.ts
index f51da23ebc8a..170e0c83512f 100644
--- a/clients/client-gamesparks/src/protocols/Aws_restJson1.ts
+++ b/clients/client-gamesparks/src/protocols/Aws_restJson1.ts
@@ -831,7 +831,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-grafana/src/protocols/Aws_restJson1.ts b/clients/client-grafana/src/protocols/Aws_restJson1.ts
index 0328b8f04ee0..b621b59577f2 100644
--- a/clients/client-grafana/src/protocols/Aws_restJson1.ts
+++ b/clients/client-grafana/src/protocols/Aws_restJson1.ts
@@ -403,7 +403,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-greengrass/src/protocols/Aws_restJson1.ts b/clients/client-greengrass/src/protocols/Aws_restJson1.ts
index 92ecb46696d0..b4db4d2c36af 100644
--- a/clients/client-greengrass/src/protocols/Aws_restJson1.ts
+++ b/clients/client-greengrass/src/protocols/Aws_restJson1.ts
@@ -2764,7 +2764,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-greengrassv2/src/protocols/Aws_restJson1.ts b/clients/client-greengrassv2/src/protocols/Aws_restJson1.ts
index 2fa19b459818..6bd61fd9dba7 100644
--- a/clients/client-greengrassv2/src/protocols/Aws_restJson1.ts
+++ b/clients/client-greengrassv2/src/protocols/Aws_restJson1.ts
@@ -917,7 +917,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-groundstation/src/protocols/Aws_restJson1.ts b/clients/client-groundstation/src/protocols/Aws_restJson1.ts
index 89809cd401f5..455d679a5a0d 100644
--- a/clients/client-groundstation/src/protocols/Aws_restJson1.ts
+++ b/clients/client-groundstation/src/protocols/Aws_restJson1.ts
@@ -806,7 +806,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-guardduty/src/protocols/Aws_restJson1.ts b/clients/client-guardduty/src/protocols/Aws_restJson1.ts
index caa0fc922d74..11e4085fef5d 100644
--- a/clients/client-guardduty/src/protocols/Aws_restJson1.ts
+++ b/clients/client-guardduty/src/protocols/Aws_restJson1.ts
@@ -1764,7 +1764,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-honeycode/src/protocols/Aws_restJson1.ts b/clients/client-honeycode/src/protocols/Aws_restJson1.ts
index 05763b1c9e68..86335d7fa791 100644
--- a/clients/client-honeycode/src/protocols/Aws_restJson1.ts
+++ b/clients/client-honeycode/src/protocols/Aws_restJson1.ts
@@ -519,7 +519,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-imagebuilder/src/protocols/Aws_restJson1.ts b/clients/client-imagebuilder/src/protocols/Aws_restJson1.ts
index 0490a9126852..0ec37c54ea8c 100644
--- a/clients/client-imagebuilder/src/protocols/Aws_restJson1.ts
+++ b/clients/client-imagebuilder/src/protocols/Aws_restJson1.ts
@@ -528,7 +528,7 @@ export const serializeAws_restJson1DeleteComponentCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/DeleteComponent";
   const query: any = map({
-    componentBuildVersionArn: [, input.componentBuildVersionArn!],
+    componentBuildVersionArn: [, __expectNonNull(input.componentBuildVersionArn!, `componentBuildVersionArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -551,7 +551,7 @@ export const serializeAws_restJson1DeleteContainerRecipeCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/DeleteContainerRecipe";
   const query: any = map({
-    containerRecipeArn: [, input.containerRecipeArn!],
+    containerRecipeArn: [, __expectNonNull(input.containerRecipeArn!, `containerRecipeArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -575,7 +575,10 @@ export const serializeAws_restJson1DeleteDistributionConfigurationCommand = asyn
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/DeleteDistributionConfiguration";
   const query: any = map({
-    distributionConfigurationArn: [, input.distributionConfigurationArn!],
+    distributionConfigurationArn: [
+      ,
+      __expectNonNull(input.distributionConfigurationArn!, `distributionConfigurationArn`),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -598,7 +601,7 @@ export const serializeAws_restJson1DeleteImageCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/DeleteImage";
   const query: any = map({
-    imageBuildVersionArn: [, input.imageBuildVersionArn!],
+    imageBuildVersionArn: [, __expectNonNull(input.imageBuildVersionArn!, `imageBuildVersionArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -621,7 +624,7 @@ export const serializeAws_restJson1DeleteImagePipelineCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/DeleteImagePipeline";
   const query: any = map({
-    imagePipelineArn: [, input.imagePipelineArn!],
+    imagePipelineArn: [, __expectNonNull(input.imagePipelineArn!, `imagePipelineArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -644,7 +647,7 @@ export const serializeAws_restJson1DeleteImageRecipeCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/DeleteImageRecipe";
   const query: any = map({
-    imageRecipeArn: [, input.imageRecipeArn!],
+    imageRecipeArn: [, __expectNonNull(input.imageRecipeArn!, `imageRecipeArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -668,7 +671,10 @@ export const serializeAws_restJson1DeleteInfrastructureConfigurationCommand = as
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/DeleteInfrastructureConfiguration";
   const query: any = map({
-    infrastructureConfigurationArn: [, input.infrastructureConfigurationArn!],
+    infrastructureConfigurationArn: [
+      ,
+      __expectNonNull(input.infrastructureConfigurationArn!, `infrastructureConfigurationArn`),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -691,7 +697,7 @@ export const serializeAws_restJson1GetComponentCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/GetComponent";
   const query: any = map({
-    componentBuildVersionArn: [, input.componentBuildVersionArn!],
+    componentBuildVersionArn: [, __expectNonNull(input.componentBuildVersionArn!, `componentBuildVersionArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -714,7 +720,7 @@ export const serializeAws_restJson1GetComponentPolicyCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/GetComponentPolicy";
   const query: any = map({
-    componentArn: [, input.componentArn!],
+    componentArn: [, __expectNonNull(input.componentArn!, `componentArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -737,7 +743,7 @@ export const serializeAws_restJson1GetContainerRecipeCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/GetContainerRecipe";
   const query: any = map({
-    containerRecipeArn: [, input.containerRecipeArn!],
+    containerRecipeArn: [, __expectNonNull(input.containerRecipeArn!, `containerRecipeArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -761,7 +767,7 @@ export const serializeAws_restJson1GetContainerRecipePolicyCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/GetContainerRecipePolicy";
   const query: any = map({
-    containerRecipeArn: [, input.containerRecipeArn!],
+    containerRecipeArn: [, __expectNonNull(input.containerRecipeArn!, `containerRecipeArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -785,7 +791,10 @@ export const serializeAws_restJson1GetDistributionConfigurationCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/GetDistributionConfiguration";
   const query: any = map({
-    distributionConfigurationArn: [, input.distributionConfigurationArn!],
+    distributionConfigurationArn: [
+      ,
+      __expectNonNull(input.distributionConfigurationArn!, `distributionConfigurationArn`),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -808,7 +817,7 @@ export const serializeAws_restJson1GetImageCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/GetImage";
   const query: any = map({
-    imageBuildVersionArn: [, input.imageBuildVersionArn!],
+    imageBuildVersionArn: [, __expectNonNull(input.imageBuildVersionArn!, `imageBuildVersionArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -831,7 +840,7 @@ export const serializeAws_restJson1GetImagePipelineCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/GetImagePipeline";
   const query: any = map({
-    imagePipelineArn: [, input.imagePipelineArn!],
+    imagePipelineArn: [, __expectNonNull(input.imagePipelineArn!, `imagePipelineArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -854,7 +863,7 @@ export const serializeAws_restJson1GetImagePolicyCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/GetImagePolicy";
   const query: any = map({
-    imageArn: [, input.imageArn!],
+    imageArn: [, __expectNonNull(input.imageArn!, `imageArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -877,7 +886,7 @@ export const serializeAws_restJson1GetImageRecipeCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/GetImageRecipe";
   const query: any = map({
-    imageRecipeArn: [, input.imageRecipeArn!],
+    imageRecipeArn: [, __expectNonNull(input.imageRecipeArn!, `imageRecipeArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -900,7 +909,7 @@ export const serializeAws_restJson1GetImageRecipePolicyCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/GetImageRecipePolicy";
   const query: any = map({
-    imageRecipeArn: [, input.imageRecipeArn!],
+    imageRecipeArn: [, __expectNonNull(input.imageRecipeArn!, `imageRecipeArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -924,7 +933,10 @@ export const serializeAws_restJson1GetInfrastructureConfigurationCommand = async
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/GetInfrastructureConfiguration";
   const query: any = map({
-    infrastructureConfigurationArn: [, input.infrastructureConfigurationArn!],
+    infrastructureConfigurationArn: [
+      ,
+      __expectNonNull(input.infrastructureConfigurationArn!, `infrastructureConfigurationArn`),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -1486,7 +1498,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-inspector2/src/protocols/Aws_restJson1.ts b/clients/client-inspector2/src/protocols/Aws_restJson1.ts
index 0ef1b0f9a991..fc9a7753b5d5 100644
--- a/clients/client-inspector2/src/protocols/Aws_restJson1.ts
+++ b/clients/client-inspector2/src/protocols/Aws_restJson1.ts
@@ -934,7 +934,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-iot-1click-devices-service/src/protocols/Aws_restJson1.ts b/clients/client-iot-1click-devices-service/src/protocols/Aws_restJson1.ts
index c054e7a48468..73fc4589b9db 100644
--- a/clients/client-iot-1click-devices-service/src/protocols/Aws_restJson1.ts
+++ b/clients/client-iot-1click-devices-service/src/protocols/Aws_restJson1.ts
@@ -208,13 +208,13 @@ export const serializeAws_restJson1ListDeviceEventsCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "DeviceId", () => input.DeviceId!, "{DeviceId}", false);
   const query: any = map({
     fromTimeStamp: [
-      () => input.FromTimeStamp !== void 0,
+      __expectNonNull(input.FromTimeStamp, `FromTimeStamp`) != null,
       () => (input.FromTimeStamp!.toISOString().split(".")[0] + "Z").toString(),
     ],
     maxResults: [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     nextToken: [, input.NextToken!],
     toTimeStamp: [
-      () => input.ToTimeStamp !== void 0,
+      __expectNonNull(input.ToTimeStamp, `ToTimeStamp`) != null,
       () => (input.ToTimeStamp!.toISOString().split(".")[0] + "Z").toString(),
     ],
   });
@@ -331,7 +331,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-iot-1click-projects/src/protocols/Aws_restJson1.ts b/clients/client-iot-1click-projects/src/protocols/Aws_restJson1.ts
index 6abd1ea9469a..aa884a574d33 100644
--- a/clients/client-iot-1click-projects/src/protocols/Aws_restJson1.ts
+++ b/clients/client-iot-1click-projects/src/protocols/Aws_restJson1.ts
@@ -434,7 +434,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-iot-events/src/protocols/Aws_restJson1.ts b/clients/client-iot-events/src/protocols/Aws_restJson1.ts
index 0f3e96e4cda2..963a17655941 100644
--- a/clients/client-iot-events/src/protocols/Aws_restJson1.ts
+++ b/clients/client-iot-events/src/protocols/Aws_restJson1.ts
@@ -659,7 +659,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -737,7 +737,7 @@ export const serializeAws_restJson1TagResourceCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -763,8 +763,11 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-iot-roborunner/src/protocols/Aws_restJson1.ts b/clients/client-iot-roborunner/src/protocols/Aws_restJson1.ts
index 34ad222bfd3e..1436c27d00fa 100644
--- a/clients/client-iot-roborunner/src/protocols/Aws_restJson1.ts
+++ b/clients/client-iot-roborunner/src/protocols/Aws_restJson1.ts
@@ -281,7 +281,7 @@ export const serializeAws_restJson1GetDestinationCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/getDestination";
   const query: any = map({
-    id: [, input.id!],
+    id: [, __expectNonNull(input.id!, `id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -304,7 +304,7 @@ export const serializeAws_restJson1GetSiteCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/getSite";
   const query: any = map({
-    id: [, input.id!],
+    id: [, __expectNonNull(input.id!, `id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -327,7 +327,7 @@ export const serializeAws_restJson1GetWorkerCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/getWorker";
   const query: any = map({
-    id: [, input.id!],
+    id: [, __expectNonNull(input.id!, `id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -350,7 +350,7 @@ export const serializeAws_restJson1GetWorkerFleetCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/getWorkerFleet";
   const query: any = map({
-    id: [, input.id!],
+    id: [, __expectNonNull(input.id!, `id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -373,7 +373,7 @@ export const serializeAws_restJson1ListDestinationsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/listDestinations";
   const query: any = map({
-    site: [, input.site!],
+    site: [, __expectNonNull(input.site!, `site`)],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     nextToken: [, input.nextToken!],
     state: [, input.state!],
@@ -423,7 +423,7 @@ export const serializeAws_restJson1ListWorkerFleetsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/listWorkerFleets";
   const query: any = map({
-    site: [, input.site!],
+    site: [, __expectNonNull(input.site!, `site`)],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     nextToken: [, input.nextToken!],
   });
@@ -448,7 +448,7 @@ export const serializeAws_restJson1ListWorkersCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/listWorkers";
   const query: any = map({
-    site: [, input.site!],
+    site: [, __expectNonNull(input.site!, `site`)],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     nextToken: [, input.nextToken!],
     fleet: [, input.fleet!],
diff --git a/clients/client-iot-wireless/src/protocols/Aws_restJson1.ts b/clients/client-iot-wireless/src/protocols/Aws_restJson1.ts
index ff499edf886f..9bf7aa7ad8af 100644
--- a/clients/client-iot-wireless/src/protocols/Aws_restJson1.ts
+++ b/clients/client-iot-wireless/src/protocols/Aws_restJson1.ts
@@ -1061,7 +1061,7 @@ export const serializeAws_restJson1DeleteQueuedMessagesCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/wireless-devices/{Id}/data";
   resolvedPath = __resolvedPath(resolvedPath, input, "Id", () => input.Id!, "{Id}", false);
   const query: any = map({
-    messageId: [, input.MessageId!],
+    messageId: [, __expectNonNull(input.MessageId!, `MessageId`)],
     WirelessDeviceType: [, input.WirelessDeviceType!],
   });
   let body: any;
@@ -1196,7 +1196,7 @@ export const serializeAws_restJson1DisassociateAwsAccountFromPartnerAccountComma
     false
   );
   const query: any = map({
-    partnerType: [, input.PartnerType!],
+    partnerType: [, __expectNonNull(input.PartnerType!, `PartnerType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1556,7 +1556,7 @@ export const serializeAws_restJson1GetPartnerAccountCommand = async (
     false
   );
   const query: any = map({
-    partnerType: [, input.PartnerType!],
+    partnerType: [, __expectNonNull(input.PartnerType!, `PartnerType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1588,7 +1588,7 @@ export const serializeAws_restJson1GetPositionCommand = async (
     false
   );
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1621,7 +1621,7 @@ export const serializeAws_restJson1GetPositionConfigurationCommand = async (
     false
   );
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1646,7 +1646,7 @@ export const serializeAws_restJson1GetResourceEventConfigurationCommand = async
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/event-configurations/{Identifier}";
   resolvedPath = __resolvedPath(resolvedPath, input, "Identifier", () => input.Identifier!, "{Identifier}", false);
   const query: any = map({
-    identifierType: [, input.IdentifierType!],
+    identifierType: [, __expectNonNull(input.IdentifierType!, `IdentifierType`)],
     partnerType: [, input.PartnerType!],
   });
   let body: any;
@@ -1679,7 +1679,7 @@ export const serializeAws_restJson1GetResourceLogLevelCommand = async (
     false
   );
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1747,7 +1747,7 @@ export const serializeAws_restJson1GetWirelessDeviceCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/wireless-devices/{Identifier}";
   resolvedPath = __resolvedPath(resolvedPath, input, "Identifier", () => input.Identifier!, "{Identifier}", false);
   const query: any = map({
-    identifierType: [, input.IdentifierType!],
+    identifierType: [, __expectNonNull(input.IdentifierType!, `IdentifierType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1801,7 +1801,7 @@ export const serializeAws_restJson1GetWirelessGatewayCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/wireless-gateways/{Identifier}";
   resolvedPath = __resolvedPath(resolvedPath, input, "Identifier", () => input.Identifier!, "{Identifier}", false);
   const query: any = map({
-    identifierType: [, input.IdentifierType!],
+    identifierType: [, __expectNonNull(input.IdentifierType!, `IdentifierType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1986,7 +1986,7 @@ export const serializeAws_restJson1ListEventConfigurationsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/event-configurations";
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
     maxResults: [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     nextToken: [, input.NextToken!],
   });
@@ -2211,7 +2211,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.ResourceArn!],
+    resourceArn: [, __expectNonNull(input.ResourceArn!, `ResourceArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2326,7 +2326,7 @@ export const serializeAws_restJson1PutPositionConfigurationCommand = async (
     false
   );
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -2366,7 +2366,7 @@ export const serializeAws_restJson1PutResourceLogLevelCommand = async (
     false
   );
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -2423,7 +2423,7 @@ export const serializeAws_restJson1ResetResourceLogLevelCommand = async (
     false
   );
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2612,7 +2612,7 @@ export const serializeAws_restJson1TagResourceCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.ResourceArn!],
+    resourceArn: [, __expectNonNull(input.ResourceArn!, `ResourceArn`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -2659,8 +2659,11 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.ResourceArn!],
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    resourceArn: [, __expectNonNull(input.ResourceArn!, `ResourceArn`)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -2909,7 +2912,7 @@ export const serializeAws_restJson1UpdatePartnerAccountCommand = async (
     false
   );
   const query: any = map({
-    partnerType: [, input.PartnerType!],
+    partnerType: [, __expectNonNull(input.PartnerType!, `PartnerType`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -2946,7 +2949,7 @@ export const serializeAws_restJson1UpdatePositionCommand = async (
     false
   );
   const query: any = map({
-    resourceType: [, input.ResourceType!],
+    resourceType: [, __expectNonNull(input.ResourceType!, `ResourceType`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -2976,7 +2979,7 @@ export const serializeAws_restJson1UpdateResourceEventConfigurationCommand = asy
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/event-configurations/{Identifier}";
   resolvedPath = __resolvedPath(resolvedPath, input, "Identifier", () => input.Identifier!, "{Identifier}", false);
   const query: any = map({
-    identifierType: [, input.IdentifierType!],
+    identifierType: [, __expectNonNull(input.IdentifierType!, `IdentifierType`)],
     partnerType: [, input.PartnerType!],
   });
   let body: any;
diff --git a/clients/client-iot/src/protocols/Aws_restJson1.ts b/clients/client-iot/src/protocols/Aws_restJson1.ts
index e00913df506e..d09ddd7af6ae 100644
--- a/clients/client-iot/src/protocols/Aws_restJson1.ts
+++ b/clients/client-iot/src/protocols/Aws_restJson1.ts
@@ -1103,7 +1103,7 @@ export const serializeAws_restJson1AttachSecurityProfileCommand = async (
     false
   );
   const query: any = map({
-    securityProfileTargetArn: [, input.securityProfileTargetArn!],
+    securityProfileTargetArn: [, __expectNonNull(input.securityProfileTargetArn!, `securityProfileTargetArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -3142,8 +3142,8 @@ export const serializeAws_restJson1DeleteV2LoggingLevelCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v2LoggingLevel";
   const query: any = map({
-    targetType: [, input.targetType!],
-    targetName: [, input.targetName!],
+    targetType: [, __expectNonNull(input.targetType!, `targetType`)],
+    targetName: [, __expectNonNull(input.targetName!, `targetName`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -4068,7 +4068,7 @@ export const serializeAws_restJson1DetachSecurityProfileCommand = async (
     false
   );
   const query: any = map({
-    securityProfileTargetArn: [, input.securityProfileTargetArn!],
+    securityProfileTargetArn: [, __expectNonNull(input.securityProfileTargetArn!, `securityProfileTargetArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -4632,9 +4632,9 @@ export const serializeAws_restJson1ListAuditMitigationActionsExecutionsCommand =
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/audit/mitigationactions/executions";
   const query: any = map({
-    taskId: [, input.taskId!],
+    taskId: [, __expectNonNull(input.taskId!, `taskId`)],
     actionStatus: [, input.actionStatus!],
-    findingId: [, input.findingId!],
+    findingId: [, __expectNonNull(input.findingId!, `findingId`)],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     nextToken: [, input.nextToken!],
   });
@@ -4666,10 +4666,13 @@ export const serializeAws_restJson1ListAuditMitigationActionsTasksCommand = asyn
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     nextToken: [, input.nextToken!],
     startTime: [
-      () => input.startTime !== void 0,
+      __expectNonNull(input.startTime, `startTime`) != null,
       () => (input.startTime!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    endTime: [() => input.endTime !== void 0, () => (input.endTime!.toISOString().split(".")[0] + "Z").toString()],
+    endTime: [
+      __expectNonNull(input.endTime, `endTime`) != null,
+      () => (input.endTime!.toISOString().split(".")[0] + "Z").toString(),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -4724,10 +4727,13 @@ export const serializeAws_restJson1ListAuditTasksCommand = async (
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/audit/tasks";
   const query: any = map({
     startTime: [
-      () => input.startTime !== void 0,
+      __expectNonNull(input.startTime, `startTime`) != null,
       () => (input.startTime!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    endTime: [() => input.endTime !== void 0, () => (input.endTime!.toISOString().split(".")[0] + "Z").toString()],
+    endTime: [
+      __expectNonNull(input.endTime, `endTime`) != null,
+      () => (input.endTime!.toISOString().split(".")[0] + "Z").toString(),
+    ],
     taskType: [, input.taskType!],
     taskStatus: [, input.taskStatus!],
     nextToken: [, input.nextToken!],
@@ -4951,10 +4957,13 @@ export const serializeAws_restJson1ListDetectMitigationActionsTasksCommand = asy
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     nextToken: [, input.nextToken!],
     startTime: [
-      () => input.startTime !== void 0,
+      __expectNonNull(input.startTime, `startTime`) != null,
       () => (input.startTime!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    endTime: [() => input.endTime !== void 0, () => (input.endTime!.toISOString().split(".")[0] + "Z").toString()],
+    endTime: [
+      __expectNonNull(input.endTime, `endTime`) != null,
+      () => (input.endTime!.toISOString().split(".")[0] + "Z").toString(),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -5206,15 +5215,18 @@ export const serializeAws_restJson1ListMetricValuesCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/metric-values";
   const query: any = map({
-    thingName: [, input.thingName!],
-    metricName: [, input.metricName!],
+    thingName: [, __expectNonNull(input.thingName!, `thingName`)],
+    metricName: [, __expectNonNull(input.metricName!, `metricName`)],
     dimensionName: [, input.dimensionName!],
     dimensionValueOperator: [, input.dimensionValueOperator!],
     startTime: [
-      () => input.startTime !== void 0,
+      __expectNonNull(input.startTime, `startTime`) != null,
       () => (input.startTime!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    endTime: [() => input.endTime !== void 0, () => (input.endTime!.toISOString().split(".")[0] + "Z").toString()],
+    endTime: [
+      __expectNonNull(input.endTime, `endTime`) != null,
+      () => (input.endTime!.toISOString().split(".")[0] + "Z").toString(),
+    ],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     nextToken: [, input.nextToken!],
   });
@@ -5502,7 +5514,7 @@ export const serializeAws_restJson1ListRelatedResourcesForAuditFindingCommand =
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/audit/relatedResources";
   const query: any = map({
-    findingId: [, input.findingId!],
+    findingId: [, __expectNonNull(input.findingId!, `findingId`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -5606,7 +5618,7 @@ export const serializeAws_restJson1ListSecurityProfilesForTargetCommand = async
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     recursive: [() => input.recursive !== void 0, () => input.recursive!.toString()],
-    securityProfileTargetArn: [, input.securityProfileTargetArn!],
+    securityProfileTargetArn: [, __expectNonNull(input.securityProfileTargetArn!, `securityProfileTargetArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -5654,7 +5666,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
     nextToken: [, input.nextToken!],
   });
   let body: any;
@@ -5820,7 +5832,7 @@ export const serializeAws_restJson1ListThingRegistrationTaskReportsCommand = asy
     "/thing-registration-tasks/{taskId}/reports";
   resolvedPath = __resolvedPath(resolvedPath, input, "taskId", () => input.taskId!, "{taskId}", false);
   const query: any = map({
-    reportType: [, input.reportType!],
+    reportType: [, __expectNonNull(input.reportType!, `reportType`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -6070,10 +6082,13 @@ export const serializeAws_restJson1ListViolationEventsCommand = async (
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/violation-events";
   const query: any = map({
     startTime: [
-      () => input.startTime !== void 0,
+      __expectNonNull(input.startTime, `startTime`) != null,
       () => (input.startTime!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    endTime: [() => input.endTime !== void 0, () => (input.endTime!.toISOString().split(".")[0] + "Z").toString()],
+    endTime: [
+      __expectNonNull(input.endTime, `endTime`) != null,
+      () => (input.endTime!.toISOString().split(".")[0] + "Z").toString(),
+    ],
     thingName: [, input.thingName!],
     securityProfileName: [, input.securityProfileName!],
     behaviorCriteriaType: [, input.behaviorCriteriaType!],
@@ -6794,7 +6809,7 @@ export const serializeAws_restJson1TransferCertificateCommand = async (
     false
   );
   const query: any = map({
-    targetAwsAccount: [, input.targetAwsAccount!],
+    targetAwsAccount: [, __expectNonNull(input.targetAwsAccount!, `targetAwsAccount`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -7034,7 +7049,7 @@ export const serializeAws_restJson1UpdateCertificateCommand = async (
     false
   );
   const query: any = map({
-    newStatus: [, input.newStatus!],
+    newStatus: [, __expectNonNull(input.newStatus!, `newStatus`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-iotanalytics/src/protocols/Aws_restJson1.ts b/clients/client-iotanalytics/src/protocols/Aws_restJson1.ts
index a9989751e9f5..7c5235635e60 100644
--- a/clients/client-iotanalytics/src/protocols/Aws_restJson1.ts
+++ b/clients/client-iotanalytics/src/protocols/Aws_restJson1.ts
@@ -804,7 +804,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -950,7 +950,7 @@ export const serializeAws_restJson1TagResourceCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -976,8 +976,11 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-iotdeviceadvisor/src/protocols/Aws_restJson1.ts b/clients/client-iotdeviceadvisor/src/protocols/Aws_restJson1.ts
index affe9bbbac4c..bc37939b0a85 100644
--- a/clients/client-iotdeviceadvisor/src/protocols/Aws_restJson1.ts
+++ b/clients/client-iotdeviceadvisor/src/protocols/Aws_restJson1.ts
@@ -412,7 +412,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-iotfleethub/src/protocols/Aws_restJson1.ts b/clients/client-iotfleethub/src/protocols/Aws_restJson1.ts
index 60bd0cc271ab..74e90ae44afc 100644
--- a/clients/client-iotfleethub/src/protocols/Aws_restJson1.ts
+++ b/clients/client-iotfleethub/src/protocols/Aws_restJson1.ts
@@ -208,7 +208,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-iotsitewise/src/protocols/Aws_restJson1.ts b/clients/client-iotsitewise/src/protocols/Aws_restJson1.ts
index 8c8419fc5128..da3e79e254ef 100644
--- a/clients/client-iotsitewise/src/protocols/Aws_restJson1.ts
+++ b/clients/client-iotsitewise/src/protocols/Aws_restJson1.ts
@@ -347,9 +347,9 @@ export const serializeAws_restJson1AssociateTimeSeriesToAssetPropertyCommand = a
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/timeseries/associate";
   const query: any = map({
-    alias: [, input.alias!],
-    assetId: [, input.assetId!],
-    propertyId: [, input.propertyId!],
+    alias: [, __expectNonNull(input.alias!, `alias`)],
+    assetId: [, __expectNonNull(input.assetId!, `assetId`)],
+    propertyId: [, __expectNonNull(input.propertyId!, `propertyId`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -1632,9 +1632,9 @@ export const serializeAws_restJson1DisassociateTimeSeriesFromAssetPropertyComman
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/timeseries/disassociate";
   const query: any = map({
-    alias: [, input.alias!],
-    assetId: [, input.assetId!],
-    propertyId: [, input.propertyId!],
+    alias: [, __expectNonNull(input.alias!, `alias`)],
+    assetId: [, __expectNonNull(input.assetId!, `assetId`)],
+    propertyId: [, __expectNonNull(input.propertyId!, `propertyId`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -1671,16 +1671,19 @@ export const serializeAws_restJson1GetAssetPropertyAggregatesCommand = async (
     propertyId: [, input.propertyId!],
     propertyAlias: [, input.propertyAlias!],
     aggregateTypes: [
-      () => input.aggregateTypes !== void 0,
+      __expectNonNull(input.aggregateTypes, `aggregateTypes`) != null,
       () => (input.aggregateTypes! || []).map((_entry) => _entry as any),
     ],
-    resolution: [, input.resolution!],
+    resolution: [, __expectNonNull(input.resolution!, `resolution`)],
     qualities: [() => input.qualities !== void 0, () => (input.qualities! || []).map((_entry) => _entry as any)],
     startDate: [
-      () => input.startDate !== void 0,
+      __expectNonNull(input.startDate, `startDate`) != null,
       () => (input.startDate!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    endDate: [() => input.endDate !== void 0, () => (input.endDate!.toISOString().split(".")[0] + "Z").toString()],
+    endDate: [
+      __expectNonNull(input.endDate, `endDate`) != null,
+      () => (input.endDate!.toISOString().split(".")[0] + "Z").toString(),
+    ],
     timeOrdering: [, input.timeOrdering!],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
@@ -1790,18 +1793,27 @@ export const serializeAws_restJson1GetInterpolatedAssetPropertyValuesCommand = a
     assetId: [, input.assetId!],
     propertyId: [, input.propertyId!],
     propertyAlias: [, input.propertyAlias!],
-    startTimeInSeconds: [() => input.startTimeInSeconds !== void 0, () => input.startTimeInSeconds!.toString()],
+    startTimeInSeconds: [
+      __expectNonNull(input.startTimeInSeconds, `startTimeInSeconds`) != null,
+      () => input.startTimeInSeconds!.toString(),
+    ],
     startTimeOffsetInNanos: [
       () => input.startTimeOffsetInNanos !== void 0,
       () => input.startTimeOffsetInNanos!.toString(),
     ],
-    endTimeInSeconds: [() => input.endTimeInSeconds !== void 0, () => input.endTimeInSeconds!.toString()],
+    endTimeInSeconds: [
+      __expectNonNull(input.endTimeInSeconds, `endTimeInSeconds`) != null,
+      () => input.endTimeInSeconds!.toString(),
+    ],
     endTimeOffsetInNanos: [() => input.endTimeOffsetInNanos !== void 0, () => input.endTimeOffsetInNanos!.toString()],
-    quality: [, input.quality!],
-    intervalInSeconds: [() => input.intervalInSeconds !== void 0, () => input.intervalInSeconds!.toString()],
+    quality: [, __expectNonNull(input.quality!, `quality`)],
+    intervalInSeconds: [
+      __expectNonNull(input.intervalInSeconds, `intervalInSeconds`) != null,
+      () => input.intervalInSeconds!.toString(),
+    ],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
-    type: [, input.type!],
+    type: [, __expectNonNull(input.type!, `type`)],
     intervalWindowInSeconds: [
       () => input.intervalWindowInSeconds !== void 0,
       () => input.intervalWindowInSeconds!.toString(),
@@ -1979,7 +1991,7 @@ export const serializeAws_restJson1ListAssetRelationshipsCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/assets/{assetId}/assetRelationships";
   resolvedPath = __resolvedPath(resolvedPath, input, "assetId", () => input.assetId!, "{assetId}", false);
   const query: any = map({
-    traversalType: [, input.traversalType!],
+    traversalType: [, __expectNonNull(input.traversalType!, `traversalType`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -2111,7 +2123,7 @@ export const serializeAws_restJson1ListDashboardsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/dashboards";
   const query: any = map({
-    projectId: [, input.projectId!],
+    projectId: [, __expectNonNull(input.projectId!, `projectId`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -2238,7 +2250,7 @@ export const serializeAws_restJson1ListProjectsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/projects";
   const query: any = map({
-    portalId: [, input.portalId!],
+    portalId: [, __expectNonNull(input.portalId!, `portalId`)],
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
   });
@@ -2270,7 +2282,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   let { hostname: resolvedHostname } = await context.endpoint();
@@ -2441,7 +2453,7 @@ export const serializeAws_restJson1TagResourceCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -2474,8 +2486,11 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   let { hostname: resolvedHostname } = await context.endpoint();
diff --git a/clients/client-iottwinmaker/src/protocols/Aws_restJson1.ts b/clients/client-iottwinmaker/src/protocols/Aws_restJson1.ts
index 8ccebc837b37..ee9194753ec3 100644
--- a/clients/client-iottwinmaker/src/protocols/Aws_restJson1.ts
+++ b/clients/client-iottwinmaker/src/protocols/Aws_restJson1.ts
@@ -958,8 +958,11 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags";
   const query: any = map({
-    resourceARN: [, input.resourceARN!],
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    resourceARN: [, __expectNonNull(input.resourceARN!, `resourceARN`)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   let { hostname: resolvedHostname } = await context.endpoint();
diff --git a/clients/client-ivs/src/protocols/Aws_restJson1.ts b/clients/client-ivs/src/protocols/Aws_restJson1.ts
index d45474b0e827..078ffb1b13be 100644
--- a/clients/client-ivs/src/protocols/Aws_restJson1.ts
+++ b/clients/client-ivs/src/protocols/Aws_restJson1.ts
@@ -774,7 +774,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-ivschat/src/protocols/Aws_restJson1.ts b/clients/client-ivschat/src/protocols/Aws_restJson1.ts
index 15e13c5e4058..55a8cbc58654 100644
--- a/clients/client-ivschat/src/protocols/Aws_restJson1.ts
+++ b/clients/client-ivschat/src/protocols/Aws_restJson1.ts
@@ -460,7 +460,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-kafka/src/protocols/Aws_restJson1.ts b/clients/client-kafka/src/protocols/Aws_restJson1.ts
index bac7400be486..9b8dc912cbe6 100644
--- a/clients/client-kafka/src/protocols/Aws_restJson1.ts
+++ b/clients/client-kafka/src/protocols/Aws_restJson1.ts
@@ -817,7 +817,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-kafkaconnect/src/protocols/Aws_restJson1.ts b/clients/client-kafkaconnect/src/protocols/Aws_restJson1.ts
index e81b7e01331f..b035854ff15b 100644
--- a/clients/client-kafkaconnect/src/protocols/Aws_restJson1.ts
+++ b/clients/client-kafkaconnect/src/protocols/Aws_restJson1.ts
@@ -452,7 +452,7 @@ export const serializeAws_restJson1UpdateConnectorCommand = async (
     false
   );
   const query: any = map({
-    currentVersion: [, input.currentVersion!],
+    currentVersion: [, __expectNonNull(input.currentVersion!, `currentVersion`)],
   });
   let body: any;
   body = JSON.stringify({
diff --git a/clients/client-lambda/src/protocols/Aws_restJson1.ts b/clients/client-lambda/src/protocols/Aws_restJson1.ts
index 2670e76fbc03..1a0178ba6e85 100644
--- a/clients/client-lambda/src/protocols/Aws_restJson1.ts
+++ b/clients/client-lambda/src/protocols/Aws_restJson1.ts
@@ -894,7 +894,7 @@ export const serializeAws_restJson1DeleteProvisionedConcurrencyConfigCommand = a
     false
   );
   const query: any = map({
-    Qualifier: [, input.Qualifier!],
+    Qualifier: [, __expectNonNull(input.Qualifier!, `Qualifier`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1239,7 +1239,7 @@ export const serializeAws_restJson1GetLayerVersionByArnCommand = async (
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2018-10-31/layers";
   const query: any = map({
     find: [, "LayerVersion"],
-    Arn: [, input.Arn!],
+    Arn: [, __expectNonNull(input.Arn!, `Arn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1335,7 +1335,7 @@ export const serializeAws_restJson1GetProvisionedConcurrencyConfigCommand = asyn
     false
   );
   const query: any = map({
-    Qualifier: [, input.Qualifier!],
+    Qualifier: [, __expectNonNull(input.Qualifier!, `Qualifier`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1985,7 +1985,7 @@ export const serializeAws_restJson1PutProvisionedConcurrencyConfigCommand = asyn
     false
   );
   const query: any = map({
-    Qualifier: [, input.Qualifier!],
+    Qualifier: [, __expectNonNull(input.Qualifier!, `Qualifier`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -2111,7 +2111,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2017-03-31/tags/{Resource}";
   resolvedPath = __resolvedPath(resolvedPath, input, "Resource", () => input.Resource!, "{Resource}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-lex-model-building-service/src/protocols/Aws_restJson1.ts b/clients/client-lex-model-building-service/src/protocols/Aws_restJson1.ts
index 0b5e499818f7..2b45591f595e 100644
--- a/clients/client-lex-model-building-service/src/protocols/Aws_restJson1.ts
+++ b/clients/client-lex-model-building-service/src/protocols/Aws_restJson1.ts
@@ -672,10 +672,10 @@ export const serializeAws_restJson1GetExportCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/exports";
   const query: any = map({
-    name: [, input.name!],
-    version: [, input.version!],
-    resourceType: [, input.resourceType!],
-    exportType: [, input.exportType!],
+    name: [, __expectNonNull(input.name!, `name`)],
+    version: [, __expectNonNull(input.version!, `version`)],
+    resourceType: [, __expectNonNull(input.resourceType!, `resourceType`)],
+    exportType: [, __expectNonNull(input.exportType!, `exportType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -915,8 +915,11 @@ export const serializeAws_restJson1GetUtterancesViewCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "botName", () => input.botName!, "{botName}", false);
   const query: any = map({
     view: [, "aggregation"],
-    bot_versions: [() => input.botVersions !== void 0, () => (input.botVersions! || []).map((_entry) => _entry as any)],
-    status_type: [, input.statusType!],
+    bot_versions: [
+      __expectNonNull(input.botVersions, `botVersions`) != null,
+      () => (input.botVersions! || []).map((_entry) => _entry as any),
+    ],
+    status_type: [, __expectNonNull(input.statusType!, `statusType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1215,7 +1218,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-lex-models-v2/src/protocols/Aws_restJson1.ts b/clients/client-lex-models-v2/src/protocols/Aws_restJson1.ts
index 30b8804e1329..40f5c89fd0b6 100644
--- a/clients/client-lex-models-v2/src/protocols/Aws_restJson1.ts
+++ b/clients/client-lex-models-v2/src/protocols/Aws_restJson1.ts
@@ -2101,7 +2101,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceARN}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceARN", () => input.resourceARN!, "{resourceARN}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-location/src/protocols/Aws_restJson1.ts b/clients/client-location/src/protocols/Aws_restJson1.ts
index 981bfdf20c1c..f9d2f18edf3a 100644
--- a/clients/client-location/src/protocols/Aws_restJson1.ts
+++ b/clients/client-location/src/protocols/Aws_restJson1.ts
@@ -1886,7 +1886,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   let { hostname: resolvedHostname } = await context.endpoint();
diff --git a/clients/client-lookoutmetrics/src/protocols/Aws_restJson1.ts b/clients/client-lookoutmetrics/src/protocols/Aws_restJson1.ts
index 836fa966f509..922d71338043 100644
--- a/clients/client-lookoutmetrics/src/protocols/Aws_restJson1.ts
+++ b/clients/client-lookoutmetrics/src/protocols/Aws_restJson1.ts
@@ -878,7 +878,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-lookoutvision/src/protocols/Aws_restJson1.ts b/clients/client-lookoutvision/src/protocols/Aws_restJson1.ts
index eb018fd7a601..525470139066 100644
--- a/clients/client-lookoutvision/src/protocols/Aws_restJson1.ts
+++ b/clients/client-lookoutvision/src/protocols/Aws_restJson1.ts
@@ -672,7 +672,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2020-11-20/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-m2/src/protocols/Aws_restJson1.ts b/clients/client-m2/src/protocols/Aws_restJson1.ts
index 73fcaff6466a..f8a62e728349 100644
--- a/clients/client-m2/src/protocols/Aws_restJson1.ts
+++ b/clients/client-m2/src/protocols/Aws_restJson1.ts
@@ -1070,7 +1070,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-macie2/src/protocols/Aws_restJson1.ts b/clients/client-macie2/src/protocols/Aws_restJson1.ts
index a7ba2cbe115d..17f439c749b3 100644
--- a/clients/client-macie2/src/protocols/Aws_restJson1.ts
+++ b/clients/client-macie2/src/protocols/Aws_restJson1.ts
@@ -843,7 +843,7 @@ export const serializeAws_restJson1DisableOrganizationAdminAccountCommand = asyn
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/admin";
   const query: any = map({
-    adminAccountId: [, input.adminAccountId!],
+    adminAccountId: [, __expectNonNull(input.adminAccountId!, `adminAccountId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1796,7 +1796,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-managedblockchain/src/protocols/Aws_restJson1.ts b/clients/client-managedblockchain/src/protocols/Aws_restJson1.ts
index b6fb31927469..1cb6b8f4d773 100644
--- a/clients/client-managedblockchain/src/protocols/Aws_restJson1.ts
+++ b/clients/client-managedblockchain/src/protocols/Aws_restJson1.ts
@@ -705,7 +705,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-marketplace-catalog/src/protocols/Aws_restJson1.ts b/clients/client-marketplace-catalog/src/protocols/Aws_restJson1.ts
index 59ca71927e9e..2a4994ce17d2 100644
--- a/clients/client-marketplace-catalog/src/protocols/Aws_restJson1.ts
+++ b/clients/client-marketplace-catalog/src/protocols/Aws_restJson1.ts
@@ -57,8 +57,8 @@ export const serializeAws_restJson1CancelChangeSetCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/CancelChangeSet";
   const query: any = map({
-    catalog: [, input.Catalog!],
-    changeSetId: [, input.ChangeSetId!],
+    catalog: [, __expectNonNull(input.Catalog!, `Catalog`)],
+    changeSetId: [, __expectNonNull(input.ChangeSetId!, `ChangeSetId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -81,8 +81,8 @@ export const serializeAws_restJson1DescribeChangeSetCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/DescribeChangeSet";
   const query: any = map({
-    catalog: [, input.Catalog!],
-    changeSetId: [, input.ChangeSetId!],
+    catalog: [, __expectNonNull(input.Catalog!, `Catalog`)],
+    changeSetId: [, __expectNonNull(input.ChangeSetId!, `ChangeSetId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -105,8 +105,8 @@ export const serializeAws_restJson1DescribeEntityCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/DescribeEntity";
   const query: any = map({
-    catalog: [, input.Catalog!],
-    entityId: [, input.EntityId!],
+    catalog: [, __expectNonNull(input.Catalog!, `Catalog`)],
+    entityId: [, __expectNonNull(input.EntityId!, `EntityId`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-mediaconnect/src/protocols/Aws_restJson1.ts b/clients/client-mediaconnect/src/protocols/Aws_restJson1.ts
index 2fe111c06253..49da0e668d73 100644
--- a/clients/client-mediaconnect/src/protocols/Aws_restJson1.ts
+++ b/clients/client-mediaconnect/src/protocols/Aws_restJson1.ts
@@ -753,7 +753,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-medialive/src/protocols/Aws_restJson1.ts b/clients/client-medialive/src/protocols/Aws_restJson1.ts
index 6cb1b3ac3283..d50b15566242 100644
--- a/clients/client-medialive/src/protocols/Aws_restJson1.ts
+++ b/clients/client-medialive/src/protocols/Aws_restJson1.ts
@@ -997,7 +997,10 @@ export const serializeAws_restJson1DeleteTagsCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/prod/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -1319,7 +1322,7 @@ export const serializeAws_restJson1ListInputDeviceTransfersCommand = async (
   const query: any = map({
     maxResults: [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     nextToken: [, input.NextToken!],
-    transferType: [, input.TransferType!],
+    transferType: [, __expectNonNull(input.TransferType!, `TransferType`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-mediapackage-vod/src/protocols/Aws_restJson1.ts b/clients/client-mediapackage-vod/src/protocols/Aws_restJson1.ts
index 918039f78a99..30b1bf125aa4 100644
--- a/clients/client-mediapackage-vod/src/protocols/Aws_restJson1.ts
+++ b/clients/client-mediapackage-vod/src/protocols/Aws_restJson1.ts
@@ -466,7 +466,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-mediapackage/src/protocols/Aws_restJson1.ts b/clients/client-mediapackage/src/protocols/Aws_restJson1.ts
index 4eff7ffaa9b6..ab10b19bee02 100644
--- a/clients/client-mediapackage/src/protocols/Aws_restJson1.ts
+++ b/clients/client-mediapackage/src/protocols/Aws_restJson1.ts
@@ -504,7 +504,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-mediatailor/src/protocols/Aws_restJson1.ts b/clients/client-mediatailor/src/protocols/Aws_restJson1.ts
index fa6f7b8faac7..b28242c70adf 100644
--- a/clients/client-mediatailor/src/protocols/Aws_restJson1.ts
+++ b/clients/client-mediatailor/src/protocols/Aws_restJson1.ts
@@ -901,7 +901,7 @@ export const serializeAws_restJson1ListAlertsCommand = async (
   const query: any = map({
     maxResults: [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     nextToken: [, input.NextToken!],
-    resourceArn: [, input.ResourceArn!],
+    resourceArn: [, __expectNonNull(input.ResourceArn!, `ResourceArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1266,7 +1266,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-mgn/src/protocols/Aws_restJson1.ts b/clients/client-mgn/src/protocols/Aws_restJson1.ts
index 287d52902d14..0303767abfe6 100644
--- a/clients/client-mgn/src/protocols/Aws_restJson1.ts
+++ b/clients/client-mgn/src/protocols/Aws_restJson1.ts
@@ -909,7 +909,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-migration-hub-refactor-spaces/src/protocols/Aws_restJson1.ts b/clients/client-migration-hub-refactor-spaces/src/protocols/Aws_restJson1.ts
index 7c8c840488d5..d909b2a8af77 100644
--- a/clients/client-migration-hub-refactor-spaces/src/protocols/Aws_restJson1.ts
+++ b/clients/client-migration-hub-refactor-spaces/src/protocols/Aws_restJson1.ts
@@ -864,7 +864,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-migrationhuborchestrator/src/protocols/Aws_restJson1.ts b/clients/client-migrationhuborchestrator/src/protocols/Aws_restJson1.ts
index ce242dfcc43a..92f7e35dd557 100644
--- a/clients/client-migrationhuborchestrator/src/protocols/Aws_restJson1.ts
+++ b/clients/client-migrationhuborchestrator/src/protocols/Aws_restJson1.ts
@@ -226,8 +226,8 @@ export const serializeAws_restJson1DeleteWorkflowStepCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/workflowstep/{id}";
   resolvedPath = __resolvedPath(resolvedPath, input, "id", () => input.id!, "{id}", false);
   const query: any = map({
-    stepGroupId: [, input.stepGroupId!],
-    workflowId: [, input.workflowId!],
+    stepGroupId: [, __expectNonNull(input.stepGroupId!, `stepGroupId`)],
+    workflowId: [, __expectNonNull(input.workflowId!, `workflowId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -251,7 +251,7 @@ export const serializeAws_restJson1DeleteWorkflowStepGroupCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/workflowstepgroup/{id}";
   resolvedPath = __resolvedPath(resolvedPath, input, "id", () => input.id!, "{id}", false);
   const query: any = map({
-    workflowId: [, input.workflowId!],
+    workflowId: [, __expectNonNull(input.workflowId!, `workflowId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -296,8 +296,8 @@ export const serializeAws_restJson1GetTemplateStepCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/templatestep/{id}";
   resolvedPath = __resolvedPath(resolvedPath, input, "id", () => input.id!, "{id}", false);
   const query: any = map({
-    templateId: [, input.templateId!],
-    stepGroupId: [, input.stepGroupId!],
+    templateId: [, __expectNonNull(input.templateId!, `templateId`)],
+    stepGroupId: [, __expectNonNull(input.stepGroupId!, `stepGroupId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -363,8 +363,8 @@ export const serializeAws_restJson1GetWorkflowStepCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/workflowstep/{id}";
   resolvedPath = __resolvedPath(resolvedPath, input, "id", () => input.id!, "{id}", false);
   const query: any = map({
-    workflowId: [, input.workflowId!],
-    stepGroupId: [, input.stepGroupId!],
+    workflowId: [, __expectNonNull(input.workflowId!, `workflowId`)],
+    stepGroupId: [, __expectNonNull(input.stepGroupId!, `stepGroupId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -388,7 +388,7 @@ export const serializeAws_restJson1GetWorkflowStepGroupCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/workflowstepgroup/{id}";
   resolvedPath = __resolvedPath(resolvedPath, input, "id", () => input.id!, "{id}", false);
   const query: any = map({
-    workflowId: [, input.workflowId!],
+    workflowId: [, __expectNonNull(input.workflowId!, `workflowId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -509,8 +509,8 @@ export const serializeAws_restJson1ListTemplateStepsCommand = async (
   const query: any = map({
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     nextToken: [, input.nextToken!],
-    templateId: [, input.templateId!],
-    stepGroupId: [, input.stepGroupId!],
+    templateId: [, __expectNonNull(input.templateId!, `templateId`)],
+    stepGroupId: [, __expectNonNull(input.stepGroupId!, `stepGroupId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -563,7 +563,7 @@ export const serializeAws_restJson1ListWorkflowStepGroupsCommand = async (
   const query: any = map({
     nextToken: [, input.nextToken!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
-    workflowId: [, input.workflowId!],
+    workflowId: [, __expectNonNull(input.workflowId!, `workflowId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -615,8 +615,8 @@ export const serializeAws_restJson1RetryWorkflowStepCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/retryworkflowstep/{id}";
   resolvedPath = __resolvedPath(resolvedPath, input, "id", () => input.id!, "{id}", false);
   const query: any = map({
-    workflowId: [, input.workflowId!],
-    stepGroupId: [, input.stepGroupId!],
+    workflowId: [, __expectNonNull(input.workflowId!, `workflowId`)],
+    stepGroupId: [, __expectNonNull(input.stepGroupId!, `stepGroupId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -707,7 +707,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -803,7 +806,7 @@ export const serializeAws_restJson1UpdateWorkflowStepGroupCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/workflowstepgroup/{id}";
   resolvedPath = __resolvedPath(resolvedPath, input, "id", () => input.id!, "{id}", false);
   const query: any = map({
-    workflowId: [, input.workflowId!],
+    workflowId: [, __expectNonNull(input.workflowId!, `workflowId`)],
   });
   let body: any;
   body = JSON.stringify({
diff --git a/clients/client-mobile/src/protocols/Aws_restJson1.ts b/clients/client-mobile/src/protocols/Aws_restJson1.ts
index ba19e2f4518d..ea8807c059c9 100644
--- a/clients/client-mobile/src/protocols/Aws_restJson1.ts
+++ b/clients/client-mobile/src/protocols/Aws_restJson1.ts
@@ -122,7 +122,7 @@ export const serializeAws_restJson1DescribeProjectCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/project";
   const query: any = map({
-    projectId: [, input.projectId!],
+    projectId: [, __expectNonNull(input.projectId!, `projectId`)],
     syncFromResources: [() => input.syncFromResources !== void 0, () => input.syncFromResources!.toString()],
   });
   let body: any;
@@ -241,7 +241,7 @@ export const serializeAws_restJson1UpdateProjectCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/update";
   const query: any = map({
-    projectId: [, input.projectId!],
+    projectId: [, __expectNonNull(input.projectId!, `projectId`)],
   });
   let body: any;
   if (input.contents !== undefined) {
diff --git a/clients/client-mq/src/protocols/Aws_restJson1.ts b/clients/client-mq/src/protocols/Aws_restJson1.ts
index 07dd543bcaa0..68a3563b9271 100644
--- a/clients/client-mq/src/protocols/Aws_restJson1.ts
+++ b/clients/client-mq/src/protocols/Aws_restJson1.ts
@@ -259,7 +259,10 @@ export const serializeAws_restJson1DeleteTagsCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-mwaa/src/protocols/Aws_restJson1.ts b/clients/client-mwaa/src/protocols/Aws_restJson1.ts
index f740eb8c211c..a9178443ac6c 100644
--- a/clients/client-mwaa/src/protocols/Aws_restJson1.ts
+++ b/clients/client-mwaa/src/protocols/Aws_restJson1.ts
@@ -372,7 +372,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   let { hostname: resolvedHostname } = await context.endpoint();
diff --git a/clients/client-networkmanager/src/protocols/Aws_restJson1.ts b/clients/client-networkmanager/src/protocols/Aws_restJson1.ts
index ae3e00e8799a..211f0a03837b 100644
--- a/clients/client-networkmanager/src/protocols/Aws_restJson1.ts
+++ b/clients/client-networkmanager/src/protocols/Aws_restJson1.ts
@@ -1345,8 +1345,8 @@ export const serializeAws_restJson1DisassociateLinkCommand = async (
     false
   );
   const query: any = map({
-    deviceId: [, input.DeviceId!],
-    linkId: [, input.LinkId!],
+    deviceId: [, __expectNonNull(input.DeviceId!, `DeviceId`)],
+    linkId: [, __expectNonNull(input.LinkId!, `LinkId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2794,7 +2794,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-nimble/src/protocols/Aws_restJson1.ts b/clients/client-nimble/src/protocols/Aws_restJson1.ts
index d3e9de610385..64690082f618 100644
--- a/clients/client-nimble/src/protocols/Aws_restJson1.ts
+++ b/clients/client-nimble/src/protocols/Aws_restJson1.ts
@@ -754,11 +754,11 @@ export const serializeAws_restJson1GetLaunchProfileInitializationCommand = async
   resolvedPath = __resolvedPath(resolvedPath, input, "studioId", () => input.studioId!, "{studioId}", false);
   const query: any = map({
     launchProfileProtocolVersions: [
-      () => input.launchProfileProtocolVersions !== void 0,
+      __expectNonNull(input.launchProfileProtocolVersions, `launchProfileProtocolVersions`) != null,
       () => (input.launchProfileProtocolVersions! || []).map((_entry) => _entry as any),
     ],
-    launchPurpose: [, input.launchPurpose!],
-    platform: [, input.platform!],
+    launchPurpose: [, __expectNonNull(input.launchPurpose!, `launchPurpose`)],
+    platform: [, __expectNonNull(input.platform!, `platform`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1400,7 +1400,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2020-08-01/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-opensearch/src/protocols/Aws_restJson1.ts b/clients/client-opensearch/src/protocols/Aws_restJson1.ts
index d4b8a68299ab..456bb2812d2b 100644
--- a/clients/client-opensearch/src/protocols/Aws_restJson1.ts
+++ b/clients/client-opensearch/src/protocols/Aws_restJson1.ts
@@ -1228,7 +1228,7 @@ export const serializeAws_restJson1ListTagsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2021-01-01/tags";
   const query: any = map({
-    arn: [, input.ARN!],
+    arn: [, __expectNonNull(input.ARN!, `ARN`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-outposts/src/protocols/Aws_restJson1.ts b/clients/client-outposts/src/protocols/Aws_restJson1.ts
index 76f767b9f142..8c38f3275921 100644
--- a/clients/client-outposts/src/protocols/Aws_restJson1.ts
+++ b/clients/client-outposts/src/protocols/Aws_restJson1.ts
@@ -390,7 +390,7 @@ export const serializeAws_restJson1GetSiteAddressCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/sites/{SiteId}/address";
   resolvedPath = __resolvedPath(resolvedPath, input, "SiteId", () => input.SiteId!, "{SiteId}", false);
   const query: any = map({
-    AddressType: [, input.AddressType!],
+    AddressType: [, __expectNonNull(input.AddressType!, `AddressType`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -662,7 +662,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-panorama/src/protocols/Aws_restJson1.ts b/clients/client-panorama/src/protocols/Aws_restJson1.ts
index 1cc9782f5458..15f47f8d3869 100644
--- a/clients/client-panorama/src/protocols/Aws_restJson1.ts
+++ b/clients/client-panorama/src/protocols/Aws_restJson1.ts
@@ -1067,7 +1067,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-pinpoint-email/src/protocols/Aws_restJson1.ts b/clients/client-pinpoint-email/src/protocols/Aws_restJson1.ts
index afd0611d8976..2580bab7bbee 100644
--- a/clients/client-pinpoint-email/src/protocols/Aws_restJson1.ts
+++ b/clients/client-pinpoint-email/src/protocols/Aws_restJson1.ts
@@ -522,7 +522,7 @@ export const serializeAws_restJson1GetBlacklistReportsCommand = async (
     "/v1/email/deliverability-dashboard/blacklist-report";
   const query: any = map({
     BlacklistItemNames: [
-      () => input.BlacklistItemNames !== void 0,
+      __expectNonNull(input.BlacklistItemNames, `BlacklistItemNames`) != null,
       () => (input.BlacklistItemNames! || []).map((_entry) => _entry as any),
     ],
   });
@@ -723,10 +723,13 @@ export const serializeAws_restJson1GetDomainStatisticsReportCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "Domain", () => input.Domain!, "{Domain}", false);
   const query: any = map({
     StartDate: [
-      () => input.StartDate !== void 0,
+      __expectNonNull(input.StartDate, `StartDate`) != null,
       () => (input.StartDate!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    EndDate: [() => input.EndDate !== void 0, () => (input.EndDate!.toISOString().split(".")[0] + "Z").toString()],
+    EndDate: [
+      __expectNonNull(input.EndDate, `EndDate`) != null,
+      () => (input.EndDate!.toISOString().split(".")[0] + "Z").toString(),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -864,10 +867,13 @@ export const serializeAws_restJson1ListDomainDeliverabilityCampaignsCommand = as
   );
   const query: any = map({
     StartDate: [
-      () => input.StartDate !== void 0,
+      __expectNonNull(input.StartDate, `StartDate`) != null,
       () => (input.StartDate!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    EndDate: [() => input.EndDate !== void 0, () => (input.EndDate!.toISOString().split(".")[0] + "Z").toString()],
+    EndDate: [
+      __expectNonNull(input.EndDate, `EndDate`) != null,
+      () => (input.EndDate!.toISOString().split(".")[0] + "Z").toString(),
+    ],
     NextToken: [, input.NextToken!],
     PageSize: [() => input.PageSize !== void 0, () => input.PageSize!.toString()],
   });
@@ -916,7 +922,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/email/tags";
   const query: any = map({
-    ResourceArn: [, input.ResourceArn!],
+    ResourceArn: [, __expectNonNull(input.ResourceArn!, `ResourceArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1368,8 +1374,11 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/email/tags";
   const query: any = map({
-    ResourceArn: [, input.ResourceArn!],
-    TagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    ResourceArn: [, __expectNonNull(input.ResourceArn!, `ResourceArn`)],
+    TagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-pinpoint/src/protocols/Aws_restJson1.ts b/clients/client-pinpoint/src/protocols/Aws_restJson1.ts
index 5c3e272a97de..a58d72c0d2a0 100644
--- a/clients/client-pinpoint/src/protocols/Aws_restJson1.ts
+++ b/clients/client-pinpoint/src/protocols/Aws_restJson1.ts
@@ -3433,7 +3433,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v1/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-privatenetworks/src/protocols/Aws_restJson1.ts b/clients/client-privatenetworks/src/protocols/Aws_restJson1.ts
index 6c5a61bba862..a8072078991e 100644
--- a/clients/client-privatenetworks/src/protocols/Aws_restJson1.ts
+++ b/clients/client-privatenetworks/src/protocols/Aws_restJson1.ts
@@ -691,7 +691,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-qldb/src/protocols/Aws_restJson1.ts b/clients/client-qldb/src/protocols/Aws_restJson1.ts
index eaceba1a6ae0..bda8078c02bb 100644
--- a/clients/client-qldb/src/protocols/Aws_restJson1.ts
+++ b/clients/client-qldb/src/protocols/Aws_restJson1.ts
@@ -523,7 +523,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-quicksight/src/protocols/Aws_restJson1.ts b/clients/client-quicksight/src/protocols/Aws_restJson1.ts
index ffb5e5ada3d2..9b0d1a73145f 100644
--- a/clients/client-quicksight/src/protocols/Aws_restJson1.ts
+++ b/clients/client-quicksight/src/protocols/Aws_restJson1.ts
@@ -2770,7 +2770,7 @@ export const serializeAws_restJson1GetDashboardEmbedUrlCommand = async (
   );
   resolvedPath = __resolvedPath(resolvedPath, input, "DashboardId", () => input.DashboardId!, "{DashboardId}", false);
   const query: any = map({
-    "creds-type": [, input.IdentityType!],
+    "creds-type": [, __expectNonNull(input.IdentityType!, `IdentityType`)],
     "session-lifetime": [
       () => input.SessionLifetimeInMinutes !== void 0,
       () => input.SessionLifetimeInMinutes!.toString(),
@@ -3919,7 +3919,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/resources/{ResourceArn}/tags";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    keys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    keys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-ram/src/protocols/Aws_restJson1.ts b/clients/client-ram/src/protocols/Aws_restJson1.ts
index e690dfac40bb..dbdea7143567 100644
--- a/clients/client-ram/src/protocols/Aws_restJson1.ts
+++ b/clients/client-ram/src/protocols/Aws_restJson1.ts
@@ -261,7 +261,7 @@ export const serializeAws_restJson1DeleteResourceShareCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/deleteresourceshare";
   const query: any = map({
-    resourceShareArn: [, input.resourceShareArn!],
+    resourceShareArn: [, __expectNonNull(input.resourceShareArn!, `resourceShareArn`)],
     clientToken: [, input.clientToken!],
   });
   let body: any;
@@ -726,7 +726,7 @@ export const serializeAws_restJson1PromoteResourceShareCreatedFromPolicyCommand
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/promoteresourcesharecreatedfrompolicy";
   const query: any = map({
-    resourceShareArn: [, input.resourceShareArn!],
+    resourceShareArn: [, __expectNonNull(input.resourceShareArn!, `resourceShareArn`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-rbin/src/protocols/Aws_restJson1.ts b/clients/client-rbin/src/protocols/Aws_restJson1.ts
index b150c01a0b08..c6c77aac72cb 100644
--- a/clients/client-rbin/src/protocols/Aws_restJson1.ts
+++ b/clients/client-rbin/src/protocols/Aws_restJson1.ts
@@ -195,7 +195,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-resiliencehub/src/protocols/Aws_restJson1.ts b/clients/client-resiliencehub/src/protocols/Aws_restJson1.ts
index c21ab3d85a8f..fd54e9cc82f8 100644
--- a/clients/client-resiliencehub/src/protocols/Aws_restJson1.ts
+++ b/clients/client-resiliencehub/src/protocols/Aws_restJson1.ts
@@ -829,7 +829,7 @@ export const serializeAws_restJson1ListRecommendationTemplatesCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/list-recommendation-templates";
   const query: any = map({
-    assessmentArn: [, input.assessmentArn!],
+    assessmentArn: [, __expectNonNull(input.assessmentArn!, `assessmentArn`)],
     reverseOrder: [() => input.reverseOrder !== void 0, () => input.reverseOrder!.toString()],
     status: [() => input.status !== void 0, () => (input.status! || []).map((_entry) => _entry as any)],
     recommendationTemplateArn: [, input.recommendationTemplateArn!],
@@ -1183,7 +1183,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-resource-explorer-2/src/protocols/Aws_restJson1.ts b/clients/client-resource-explorer-2/src/protocols/Aws_restJson1.ts
index 49c48605691e..5b52ebca6cf4 100644
--- a/clients/client-resource-explorer-2/src/protocols/Aws_restJson1.ts
+++ b/clients/client-resource-explorer-2/src/protocols/Aws_restJson1.ts
@@ -475,7 +475,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-robomaker/src/protocols/Aws_restJson1.ts b/clients/client-robomaker/src/protocols/Aws_restJson1.ts
index 07aea4e5aff9..76de00657800 100644
--- a/clients/client-robomaker/src/protocols/Aws_restJson1.ts
+++ b/clients/client-robomaker/src/protocols/Aws_restJson1.ts
@@ -1670,7 +1670,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-rolesanywhere/src/protocols/Aws_restJson1.ts b/clients/client-rolesanywhere/src/protocols/Aws_restJson1.ts
index f36c238a131b..1f3127bb5938 100644
--- a/clients/client-rolesanywhere/src/protocols/Aws_restJson1.ts
+++ b/clients/client-rolesanywhere/src/protocols/Aws_restJson1.ts
@@ -529,7 +529,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/ListTagsForResource";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-route-53/src/protocols/Aws_restXml.ts b/clients/client-route-53/src/protocols/Aws_restXml.ts
index 50f937a72a16..740a9fbe7846 100644
--- a/clients/client-route-53/src/protocols/Aws_restXml.ts
+++ b/clients/client-route-53/src/protocols/Aws_restXml.ts
@@ -1948,8 +1948,8 @@ export const serializeAws_restXmlListHostedZonesByVPCCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2013-04-01/hostedzonesbyvpc";
   const query: any = map({
-    vpcid: [, input.VPCId!],
-    vpcregion: [, input.VPCRegion!],
+    vpcid: [, __expectNonNull(input.VPCId!, `VPCId`)],
+    vpcregion: [, __expectNonNull(input.VPCRegion!, `VPCRegion`)],
     maxitems: [() => input.MaxItems !== void 0, () => input.MaxItems!.toString()],
     nexttoken: [, input.NextToken!],
   });
@@ -2187,7 +2187,7 @@ export const serializeAws_restXmlListTrafficPolicyInstancesByHostedZoneCommand =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` +
     "/2013-04-01/trafficpolicyinstances/hostedzone";
   const query: any = map({
-    id: [, input.HostedZoneId!],
+    id: [, __expectNonNull(input.HostedZoneId!, `HostedZoneId`)],
     trafficpolicyinstancename: [, input.TrafficPolicyInstanceNameMarker!],
     trafficpolicyinstancetype: [, input.TrafficPolicyInstanceTypeMarker!],
     maxitems: [() => input.MaxItems !== void 0, () => input.MaxItems!.toString()],
@@ -2215,8 +2215,11 @@ export const serializeAws_restXmlListTrafficPolicyInstancesByPolicyCommand = asy
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` +
     "/2013-04-01/trafficpolicyinstances/trafficpolicy";
   const query: any = map({
-    id: [, input.TrafficPolicyId!],
-    version: [() => input.TrafficPolicyVersion !== void 0, () => input.TrafficPolicyVersion!.toString()],
+    id: [, __expectNonNull(input.TrafficPolicyId!, `TrafficPolicyId`)],
+    version: [
+      __expectNonNull(input.TrafficPolicyVersion, `TrafficPolicyVersion`) != null,
+      () => input.TrafficPolicyVersion!.toString(),
+    ],
     hostedzoneid: [, input.HostedZoneIdMarker!],
     trafficpolicyinstancename: [, input.TrafficPolicyInstanceNameMarker!],
     trafficpolicyinstancetype: [, input.TrafficPolicyInstanceTypeMarker!],
@@ -2304,9 +2307,9 @@ export const serializeAws_restXmlTestDNSAnswerCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/2013-04-01/testdnsanswer";
   const query: any = map({
-    hostedzoneid: [, input.HostedZoneId!],
-    recordname: [, input.RecordName!],
-    recordtype: [, input.RecordType!],
+    hostedzoneid: [, __expectNonNull(input.HostedZoneId!, `HostedZoneId`)],
+    recordname: [, __expectNonNull(input.RecordName!, `RecordName`)],
+    recordtype: [, __expectNonNull(input.RecordType!, `RecordType`)],
     resolverip: [, input.ResolverIP!],
     edns0clientsubnetip: [, input.EDNS0ClientSubnetIP!],
     edns0clientsubnetmask: [, input.EDNS0ClientSubnetMask!],
diff --git a/clients/client-route53-recovery-control-config/src/protocols/Aws_restJson1.ts b/clients/client-route53-recovery-control-config/src/protocols/Aws_restJson1.ts
index 12c3572c29c3..110a8089d405 100644
--- a/clients/client-route53-recovery-control-config/src/protocols/Aws_restJson1.ts
+++ b/clients/client-route53-recovery-control-config/src/protocols/Aws_restJson1.ts
@@ -611,7 +611,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    TagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    TagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-route53-recovery-readiness/src/protocols/Aws_restJson1.ts b/clients/client-route53-recovery-readiness/src/protocols/Aws_restJson1.ts
index eb31928a5ffc..b2b68c07e5df 100644
--- a/clients/client-route53-recovery-readiness/src/protocols/Aws_restJson1.ts
+++ b/clients/client-route53-recovery-readiness/src/protocols/Aws_restJson1.ts
@@ -859,7 +859,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-rum/src/protocols/Aws_restJson1.ts b/clients/client-rum/src/protocols/Aws_restJson1.ts
index d102b738663f..40b619f12da0 100644
--- a/clients/client-rum/src/protocols/Aws_restJson1.ts
+++ b/clients/client-rum/src/protocols/Aws_restJson1.ts
@@ -148,10 +148,10 @@ export const serializeAws_restJson1BatchDeleteRumMetricDefinitionsCommand = asyn
     false
   );
   const query: any = map({
-    destination: [, input.Destination!],
+    destination: [, __expectNonNull(input.Destination!, `Destination`)],
     destinationArn: [, input.DestinationArn!],
     metricDefinitionIds: [
-      () => input.MetricDefinitionIds !== void 0,
+      __expectNonNull(input.MetricDefinitionIds, `MetricDefinitionIds`) != null,
       () => (input.MetricDefinitionIds! || []).map((_entry) => _entry as any),
     ],
   });
@@ -185,7 +185,7 @@ export const serializeAws_restJson1BatchGetRumMetricDefinitionsCommand = async (
     false
   );
   const query: any = map({
-    destination: [, input.Destination!],
+    destination: [, __expectNonNull(input.Destination!, `Destination`)],
     destinationArn: [, input.DestinationArn!],
     maxResults: [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
     nextToken: [, input.NextToken!],
@@ -274,7 +274,7 @@ export const serializeAws_restJson1DeleteRumMetricsDestinationCommand = async (
     false
   );
   const query: any = map({
-    destination: [, input.Destination!],
+    destination: [, __expectNonNull(input.Destination!, `Destination`)],
     destinationArn: [, input.DestinationArn!],
   });
   let body: any;
@@ -523,7 +523,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-s3-control/src/protocols/Aws_restXml.ts b/clients/client-s3-control/src/protocols/Aws_restXml.ts
index b8c8ab3a1da0..4df9e2ea20b6 100644
--- a/clients/client-s3-control/src/protocols/Aws_restXml.ts
+++ b/clients/client-s3-control/src/protocols/Aws_restXml.ts
@@ -2582,7 +2582,7 @@ export const serializeAws_restXmlUpdateJobPriorityCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v20180820/jobs/{JobId}/priority";
   resolvedPath = __resolvedPath(resolvedPath, input, "JobId", () => input.JobId!, "{JobId}", false);
   const query: any = map({
-    priority: [() => input.Priority !== void 0, () => input.Priority!.toString()],
+    priority: [__expectNonNull(input.Priority, `Priority`) != null, () => input.Priority!.toString()],
   });
   let body: any;
   let { hostname: resolvedHostname } = await context.endpoint();
@@ -2620,7 +2620,7 @@ export const serializeAws_restXmlUpdateJobStatusCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v20180820/jobs/{JobId}/status";
   resolvedPath = __resolvedPath(resolvedPath, input, "JobId", () => input.JobId!, "{JobId}", false);
   const query: any = map({
-    requestedJobStatus: [, input.RequestedJobStatus!],
+    requestedJobStatus: [, __expectNonNull(input.RequestedJobStatus!, `RequestedJobStatus`)],
     statusUpdateReason: [, input.StatusUpdateReason!],
   });
   let body: any;
diff --git a/clients/client-s3/src/protocols/Aws_restXml.ts b/clients/client-s3/src/protocols/Aws_restXml.ts
index ee69e450a5fc..279f1fcc8bbc 100644
--- a/clients/client-s3/src/protocols/Aws_restXml.ts
+++ b/clients/client-s3/src/protocols/Aws_restXml.ts
@@ -445,7 +445,7 @@ export const serializeAws_restXmlAbortMultipartUploadCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "Key", () => input.Key!, "{Key+}", true);
   const query: any = map({
     "x-id": [, "AbortMultipartUpload"],
-    uploadId: [, input.UploadId!],
+    uploadId: [, __expectNonNull(input.UploadId!, `UploadId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -482,7 +482,7 @@ export const serializeAws_restXmlCompleteMultipartUploadCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "Key", () => input.Key!, "{Key+}", true);
   const query: any = map({
     "x-id": [, "CompleteMultipartUpload"],
-    uploadId: [, input.UploadId!],
+    uploadId: [, __expectNonNull(input.UploadId!, `UploadId`)],
   });
   let body: any;
   if (input.MultipartUpload !== undefined) {
@@ -731,7 +731,7 @@ export const serializeAws_restXmlDeleteBucketAnalyticsConfigurationCommand = asy
   resolvedPath = __resolvedPath(resolvedPath, input, "Bucket", () => input.Bucket!, "{Bucket}", false);
   const query: any = map({
     analytics: [, ""],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -808,7 +808,7 @@ export const serializeAws_restXmlDeleteBucketIntelligentTieringConfigurationComm
   resolvedPath = __resolvedPath(resolvedPath, input, "Bucket", () => input.Bucket!, "{Bucket}", false);
   const query: any = map({
     "intelligent-tiering": [, ""],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -835,7 +835,7 @@ export const serializeAws_restXmlDeleteBucketInventoryConfigurationCommand = asy
   resolvedPath = __resolvedPath(resolvedPath, input, "Bucket", () => input.Bucket!, "{Bucket}", false);
   const query: any = map({
     inventory: [, ""],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -888,7 +888,7 @@ export const serializeAws_restXmlDeleteBucketMetricsConfigurationCommand = async
   resolvedPath = __resolvedPath(resolvedPath, input, "Bucket", () => input.Bucket!, "{Bucket}", false);
   const query: any = map({
     metrics: [, ""],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1231,7 +1231,7 @@ export const serializeAws_restXmlGetBucketAnalyticsConfigurationCommand = async
   const query: any = map({
     analytics: [, ""],
     "x-id": [, "GetBucketAnalyticsConfiguration"],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1309,7 +1309,7 @@ export const serializeAws_restXmlGetBucketIntelligentTieringConfigurationCommand
   const query: any = map({
     "intelligent-tiering": [, ""],
     "x-id": [, "GetBucketIntelligentTieringConfiguration"],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1337,7 +1337,7 @@ export const serializeAws_restXmlGetBucketInventoryConfigurationCommand = async
   const query: any = map({
     inventory: [, ""],
     "x-id": [, "GetBucketInventoryConfiguration"],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1443,7 +1443,7 @@ export const serializeAws_restXmlGetBucketMetricsConfigurationCommand = async (
   const query: any = map({
     metrics: [, ""],
     "x-id": [, "GetBucketMetricsConfiguration"],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2326,7 +2326,7 @@ export const serializeAws_restXmlListPartsCommand = async (
     "x-id": [, "ListParts"],
     "max-parts": [() => input.MaxParts !== void 0, () => input.MaxParts!.toString()],
     "part-number-marker": [, input.PartNumberMarker!],
-    uploadId: [, input.UploadId!],
+    uploadId: [, __expectNonNull(input.UploadId!, `UploadId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2437,7 +2437,7 @@ export const serializeAws_restXmlPutBucketAnalyticsConfigurationCommand = async
   resolvedPath = __resolvedPath(resolvedPath, input, "Bucket", () => input.Bucket!, "{Bucket}", false);
   const query: any = map({
     analytics: [, ""],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   if (input.AnalyticsConfiguration !== undefined) {
@@ -2552,7 +2552,7 @@ export const serializeAws_restXmlPutBucketIntelligentTieringConfigurationCommand
   resolvedPath = __resolvedPath(resolvedPath, input, "Bucket", () => input.Bucket!, "{Bucket}", false);
   const query: any = map({
     "intelligent-tiering": [, ""],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   if (input.IntelligentTieringConfiguration !== undefined) {
@@ -2590,7 +2590,7 @@ export const serializeAws_restXmlPutBucketInventoryConfigurationCommand = async
   resolvedPath = __resolvedPath(resolvedPath, input, "Bucket", () => input.Bucket!, "{Bucket}", false);
   const query: any = map({
     inventory: [, ""],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   if (input.InventoryConfiguration !== undefined) {
@@ -2706,7 +2706,7 @@ export const serializeAws_restXmlPutBucketMetricsConfigurationCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "Bucket", () => input.Bucket!, "{Bucket}", false);
   const query: any = map({
     metrics: [, ""],
-    id: [, input.Id!],
+    id: [, __expectNonNull(input.Id!, `Id`)],
   });
   let body: any;
   if (input.MetricsConfiguration !== undefined) {
@@ -3518,8 +3518,8 @@ export const serializeAws_restXmlUploadPartCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "Key", () => input.Key!, "{Key+}", true);
   const query: any = map({
     "x-id": [, "UploadPart"],
-    partNumber: [() => input.PartNumber !== void 0, () => input.PartNumber!.toString()],
-    uploadId: [, input.UploadId!],
+    partNumber: [__expectNonNull(input.PartNumber, `PartNumber`) != null, () => input.PartNumber!.toString()],
+    uploadId: [, __expectNonNull(input.UploadId!, `UploadId`)],
   });
   let body: any;
   if (input.Body !== undefined) {
@@ -3575,8 +3575,8 @@ export const serializeAws_restXmlUploadPartCopyCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "Key", () => input.Key!, "{Key+}", true);
   const query: any = map({
     "x-id": [, "UploadPartCopy"],
-    partNumber: [() => input.PartNumber !== void 0, () => input.PartNumber!.toString()],
-    uploadId: [, input.UploadId!],
+    partNumber: [__expectNonNull(input.PartNumber, `PartNumber`) != null, () => input.PartNumber!.toString()],
+    uploadId: [, __expectNonNull(input.UploadId!, `UploadId`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-s3outposts/src/protocols/Aws_restJson1.ts b/clients/client-s3outposts/src/protocols/Aws_restJson1.ts
index b50ec6a513c6..75e16053960e 100644
--- a/clients/client-s3outposts/src/protocols/Aws_restJson1.ts
+++ b/clients/client-s3outposts/src/protocols/Aws_restJson1.ts
@@ -73,8 +73,8 @@ export const serializeAws_restJson1DeleteEndpointCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/S3Outposts/DeleteEndpoint";
   const query: any = map({
-    endpointId: [, input.EndpointId!],
-    outpostId: [, input.OutpostId!],
+    endpointId: [, __expectNonNull(input.EndpointId!, `EndpointId`)],
+    outpostId: [, __expectNonNull(input.OutpostId!, `OutpostId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -125,7 +125,7 @@ export const serializeAws_restJson1ListSharedEndpointsCommand = async (
   const query: any = map({
     nextToken: [, input.NextToken!],
     maxResults: [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
-    outpostId: [, input.OutpostId!],
+    outpostId: [, __expectNonNull(input.OutpostId!, `OutpostId`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-sagemaker-a2i-runtime/src/protocols/Aws_restJson1.ts b/clients/client-sagemaker-a2i-runtime/src/protocols/Aws_restJson1.ts
index cf5f51beb902..0b10dc14bc9a 100644
--- a/clients/client-sagemaker-a2i-runtime/src/protocols/Aws_restJson1.ts
+++ b/clients/client-sagemaker-a2i-runtime/src/protocols/Aws_restJson1.ts
@@ -109,7 +109,7 @@ export const serializeAws_restJson1ListHumanLoopsCommand = async (
       () => input.CreationTimeBefore !== void 0,
       () => (input.CreationTimeBefore!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    FlowDefinitionArn: [, input.FlowDefinitionArn!],
+    FlowDefinitionArn: [, __expectNonNull(input.FlowDefinitionArn!, `FlowDefinitionArn`)],
     SortOrder: [, input.SortOrder!],
     NextToken: [, input.NextToken!],
     MaxResults: [() => input.MaxResults !== void 0, () => input.MaxResults!.toString()],
diff --git a/clients/client-sagemaker-featurestore-runtime/src/protocols/Aws_restJson1.ts b/clients/client-sagemaker-featurestore-runtime/src/protocols/Aws_restJson1.ts
index 6b884d5ea0f1..435bc31647a5 100644
--- a/clients/client-sagemaker-featurestore-runtime/src/protocols/Aws_restJson1.ts
+++ b/clients/client-sagemaker-featurestore-runtime/src/protocols/Aws_restJson1.ts
@@ -76,8 +76,11 @@ export const serializeAws_restJson1DeleteRecordCommand = async (
     false
   );
   const query: any = map({
-    RecordIdentifierValueAsString: [, input.RecordIdentifierValueAsString!],
-    EventTime: [, input.EventTime!],
+    RecordIdentifierValueAsString: [
+      ,
+      __expectNonNull(input.RecordIdentifierValueAsString!, `RecordIdentifierValueAsString`),
+    ],
+    EventTime: [, __expectNonNull(input.EventTime!, `EventTime`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -109,7 +112,10 @@ export const serializeAws_restJson1GetRecordCommand = async (
     false
   );
   const query: any = map({
-    RecordIdentifierValueAsString: [, input.RecordIdentifierValueAsString!],
+    RecordIdentifierValueAsString: [
+      ,
+      __expectNonNull(input.RecordIdentifierValueAsString!, `RecordIdentifierValueAsString`),
+    ],
     FeatureName: [
       () => input.FeatureNames !== void 0,
       () => (input.FeatureNames! || []).map((_entry) => _entry as any),
diff --git a/clients/client-scheduler/src/protocols/Aws_restJson1.ts b/clients/client-scheduler/src/protocols/Aws_restJson1.ts
index 675fdd2a6610..2f48b477acbc 100644
--- a/clients/client-scheduler/src/protocols/Aws_restJson1.ts
+++ b/clients/client-scheduler/src/protocols/Aws_restJson1.ts
@@ -333,7 +333,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    TagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    TagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-schemas/src/protocols/Aws_restJson1.ts b/clients/client-schemas/src/protocols/Aws_restJson1.ts
index 65b89452a1f5..cdfa8b9e0a6c 100644
--- a/clients/client-schemas/src/protocols/Aws_restJson1.ts
+++ b/clients/client-schemas/src/protocols/Aws_restJson1.ts
@@ -481,7 +481,7 @@ export const serializeAws_restJson1ExportSchemaCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "SchemaName", () => input.SchemaName!, "{SchemaName}", false);
   const query: any = map({
     schemaVersion: [, input.SchemaVersion!],
-    type: [, input.Type!],
+    type: [, __expectNonNull(input.Type!, `Type`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -805,7 +805,7 @@ export const serializeAws_restJson1SearchSchemasCommand = async (
     false
   );
   const query: any = map({
-    keywords: [, input.Keywords!],
+    keywords: [, __expectNonNull(input.Keywords!, `Keywords`)],
     limit: [() => input.Limit !== void 0, () => input.Limit!.toString()],
     nextToken: [, input.NextToken!],
   });
@@ -912,7 +912,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-securityhub/src/protocols/Aws_restJson1.ts b/clients/client-securityhub/src/protocols/Aws_restJson1.ts
index 485ada85611f..32201680bc27 100644
--- a/clients/client-securityhub/src/protocols/Aws_restJson1.ts
+++ b/clients/client-securityhub/src/protocols/Aws_restJson1.ts
@@ -1893,7 +1893,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-service-catalog-appregistry/src/protocols/Aws_restJson1.ts b/clients/client-service-catalog-appregistry/src/protocols/Aws_restJson1.ts
index 46674440e098..d319673814ad 100644
--- a/clients/client-service-catalog-appregistry/src/protocols/Aws_restJson1.ts
+++ b/clients/client-service-catalog-appregistry/src/protocols/Aws_restJson1.ts
@@ -666,7 +666,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-sesv2/src/protocols/Aws_restJson1.ts b/clients/client-sesv2/src/protocols/Aws_restJson1.ts
index 236b57cc337b..329be939eed2 100644
--- a/clients/client-sesv2/src/protocols/Aws_restJson1.ts
+++ b/clients/client-sesv2/src/protocols/Aws_restJson1.ts
@@ -1091,7 +1091,7 @@ export const serializeAws_restJson1GetBlacklistReportsCommand = async (
     "/v2/email/deliverability-dashboard/blacklist-report";
   const query: any = map({
     BlacklistItemNames: [
-      () => input.BlacklistItemNames !== void 0,
+      __expectNonNull(input.BlacklistItemNames, `BlacklistItemNames`) != null,
       () => (input.BlacklistItemNames! || []).map((_entry) => _entry as any),
     ],
   });
@@ -1407,10 +1407,13 @@ export const serializeAws_restJson1GetDomainStatisticsReportCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "Domain", () => input.Domain!, "{Domain}", false);
   const query: any = map({
     StartDate: [
-      () => input.StartDate !== void 0,
+      __expectNonNull(input.StartDate, `StartDate`) != null,
       () => (input.StartDate!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    EndDate: [() => input.EndDate !== void 0, () => (input.EndDate!.toISOString().split(".")[0] + "Z").toString()],
+    EndDate: [
+      __expectNonNull(input.EndDate, `EndDate`) != null,
+      () => (input.EndDate!.toISOString().split(".")[0] + "Z").toString(),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -1745,10 +1748,13 @@ export const serializeAws_restJson1ListDomainDeliverabilityCampaignsCommand = as
   );
   const query: any = map({
     StartDate: [
-      () => input.StartDate !== void 0,
+      __expectNonNull(input.StartDate, `StartDate`) != null,
       () => (input.StartDate!.toISOString().split(".")[0] + "Z").toString(),
     ],
-    EndDate: [() => input.EndDate !== void 0, () => (input.EndDate!.toISOString().split(".")[0] + "Z").toString()],
+    EndDate: [
+      __expectNonNull(input.EndDate, `EndDate`) != null,
+      () => (input.EndDate!.toISOString().split(".")[0] + "Z").toString(),
+    ],
     NextToken: [, input.NextToken!],
     PageSize: [() => input.PageSize !== void 0, () => input.PageSize!.toString()],
   });
@@ -1908,7 +1914,7 @@ export const serializeAws_restJson1ListTagsForResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v2/email/tags";
   const query: any = map({
-    ResourceArn: [, input.ResourceArn!],
+    ResourceArn: [, __expectNonNull(input.ResourceArn!, `ResourceArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -2732,8 +2738,11 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/v2/email/tags";
   const query: any = map({
-    ResourceArn: [, input.ResourceArn!],
-    TagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    ResourceArn: [, __expectNonNull(input.ResourceArn!, `ResourceArn`)],
+    TagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-signer/src/protocols/Aws_restJson1.ts b/clients/client-signer/src/protocols/Aws_restJson1.ts
index d081ef1da55f..d921886b666c 100644
--- a/clients/client-signer/src/protocols/Aws_restJson1.ts
+++ b/clients/client-signer/src/protocols/Aws_restJson1.ts
@@ -405,7 +405,7 @@ export const serializeAws_restJson1RemoveProfilePermissionCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "profileName", () => input.profileName!, "{profileName}", false);
   resolvedPath = __resolvedPath(resolvedPath, input, "statementId", () => input.statementId!, "{statementId}", false);
   const query: any = map({
-    revisionId: [, input.revisionId!],
+    revisionId: [, __expectNonNull(input.revisionId!, `revisionId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -537,7 +537,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-snow-device-management/src/protocols/Aws_restJson1.ts b/clients/client-snow-device-management/src/protocols/Aws_restJson1.ts
index fa589103a4d5..683a7f49657d 100644
--- a/clients/client-snow-device-management/src/protocols/Aws_restJson1.ts
+++ b/clients/client-snow-device-management/src/protocols/Aws_restJson1.ts
@@ -302,7 +302,7 @@ export const serializeAws_restJson1ListExecutionsCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/executions";
   const query: any = map({
-    taskId: [, input.taskId!],
+    taskId: [, __expectNonNull(input.taskId!, `taskId`)],
     state: [, input.state!],
     maxResults: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
     nextToken: [, input.nextToken!],
@@ -399,7 +399,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-ssm-incidents/src/protocols/Aws_restJson1.ts b/clients/client-ssm-incidents/src/protocols/Aws_restJson1.ts
index 0185f04acb6e..3951c154801a 100644
--- a/clients/client-ssm-incidents/src/protocols/Aws_restJson1.ts
+++ b/clients/client-ssm-incidents/src/protocols/Aws_restJson1.ts
@@ -263,7 +263,7 @@ export const serializeAws_restJson1DeleteReplicationSetCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/deleteReplicationSet";
   const query: any = map({
-    arn: [, input.arn!],
+    arn: [, __expectNonNull(input.arn!, `arn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -360,7 +360,7 @@ export const serializeAws_restJson1GetIncidentRecordCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/getIncidentRecord";
   const query: any = map({
-    arn: [, input.arn!],
+    arn: [, __expectNonNull(input.arn!, `arn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -383,7 +383,7 @@ export const serializeAws_restJson1GetReplicationSetCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/getReplicationSet";
   const query: any = map({
-    arn: [, input.arn!],
+    arn: [, __expectNonNull(input.arn!, `arn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -408,7 +408,7 @@ export const serializeAws_restJson1GetResourcePoliciesCommand = async (
   };
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/getResourcePolicies";
   const query: any = map({
-    resourceArn: [, input.resourceArn!],
+    resourceArn: [, __expectNonNull(input.resourceArn!, `resourceArn`)],
   });
   let body: any;
   body = JSON.stringify({
@@ -435,7 +435,7 @@ export const serializeAws_restJson1GetResponsePlanCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/getResponsePlan";
   const query: any = map({
-    arn: [, input.arn!],
+    arn: [, __expectNonNull(input.arn!, `arn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -458,8 +458,8 @@ export const serializeAws_restJson1GetTimelineEventCommand = async (
   const headers: any = {};
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/getTimelineEvent";
   const query: any = map({
-    incidentRecordArn: [, input.incidentRecordArn!],
-    eventId: [, input.eventId!],
+    incidentRecordArn: [, __expectNonNull(input.incidentRecordArn!, `incidentRecordArn`)],
+    eventId: [, __expectNonNull(input.eventId!, `eventId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -717,7 +717,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-ssm-sap/src/protocols/Aws_restJson1.ts b/clients/client-ssm-sap/src/protocols/Aws_restJson1.ts
index 5fe8829a2b15..062592e8969e 100644
--- a/clients/client-ssm-sap/src/protocols/Aws_restJson1.ts
+++ b/clients/client-ssm-sap/src/protocols/Aws_restJson1.ts
@@ -443,7 +443,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-sso/src/protocols/Aws_restJson1.ts b/clients/client-sso/src/protocols/Aws_restJson1.ts
index c1a516d932ad..dc86bd8e93d7 100644
--- a/clients/client-sso/src/protocols/Aws_restJson1.ts
+++ b/clients/client-sso/src/protocols/Aws_restJson1.ts
@@ -42,8 +42,8 @@ export const serializeAws_restJson1GetRoleCredentialsCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/federation/credentials";
   const query: any = map({
-    role_name: [, input.roleName!],
-    account_id: [, input.accountId!],
+    role_name: [, __expectNonNull(input.roleName!, `roleName`)],
+    account_id: [, __expectNonNull(input.accountId!, `accountId`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -70,7 +70,7 @@ export const serializeAws_restJson1ListAccountRolesCommand = async (
   const query: any = map({
     next_token: [, input.nextToken!],
     max_result: [() => input.maxResults !== void 0, () => input.maxResults!.toString()],
-    account_id: [, input.accountId!],
+    account_id: [, __expectNonNull(input.accountId!, `accountId`)],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-synthetics/src/protocols/Aws_restJson1.ts b/clients/client-synthetics/src/protocols/Aws_restJson1.ts
index c150326d3346..af9392e8dfcb 100644
--- a/clients/client-synthetics/src/protocols/Aws_restJson1.ts
+++ b/clients/client-synthetics/src/protocols/Aws_restJson1.ts
@@ -610,7 +610,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-wellarchitected/src/protocols/Aws_restJson1.ts b/clients/client-wellarchitected/src/protocols/Aws_restJson1.ts
index b88dbc1df587..6fb73bd69a7e 100644
--- a/clients/client-wellarchitected/src/protocols/Aws_restJson1.ts
+++ b/clients/client-wellarchitected/src/protocols/Aws_restJson1.ts
@@ -337,8 +337,8 @@ export const serializeAws_restJson1DeleteLensCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/lenses/{LensAlias}";
   resolvedPath = __resolvedPath(resolvedPath, input, "LensAlias", () => input.LensAlias!, "{LensAlias}", false);
   const query: any = map({
-    ClientRequestToken: [, input.ClientRequestToken!],
-    LensStatus: [, input.LensStatus!],
+    ClientRequestToken: [, __expectNonNull(input.ClientRequestToken!, `ClientRequestToken`)],
+    LensStatus: [, __expectNonNull(input.LensStatus!, `LensStatus`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -364,7 +364,7 @@ export const serializeAws_restJson1DeleteLensShareCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "ShareId", () => input.ShareId!, "{ShareId}", false);
   resolvedPath = __resolvedPath(resolvedPath, input, "LensAlias", () => input.LensAlias!, "{LensAlias}", false);
   const query: any = map({
-    ClientRequestToken: [, input.ClientRequestToken!],
+    ClientRequestToken: [, __expectNonNull(input.ClientRequestToken!, `ClientRequestToken`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -388,7 +388,7 @@ export const serializeAws_restJson1DeleteWorkloadCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/workloads/{WorkloadId}";
   resolvedPath = __resolvedPath(resolvedPath, input, "WorkloadId", () => input.WorkloadId!, "{WorkloadId}", false);
   const query: any = map({
-    ClientRequestToken: [, input.ClientRequestToken!],
+    ClientRequestToken: [, __expectNonNull(input.ClientRequestToken!, `ClientRequestToken`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -414,7 +414,7 @@ export const serializeAws_restJson1DeleteWorkloadShareCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "ShareId", () => input.ShareId!, "{ShareId}", false);
   resolvedPath = __resolvedPath(resolvedPath, input, "WorkloadId", () => input.WorkloadId!, "{WorkloadId}", false);
   const query: any = map({
-    ClientRequestToken: [, input.ClientRequestToken!],
+    ClientRequestToken: [, __expectNonNull(input.ClientRequestToken!, `ClientRequestToken`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1083,7 +1083,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{WorkloadArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "WorkloadArn", () => input.WorkloadArn!, "{WorkloadArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-wisdom/src/protocols/Aws_restJson1.ts b/clients/client-wisdom/src/protocols/Aws_restJson1.ts
index b15dcd301d9b..81b21348610d 100644
--- a/clients/client-wisdom/src/protocols/Aws_restJson1.ts
+++ b/clients/client-wisdom/src/protocols/Aws_restJson1.ts
@@ -951,7 +951,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-workdocs/src/protocols/Aws_restJson1.ts b/clients/client-workdocs/src/protocols/Aws_restJson1.ts
index 1e5e1df98551..2bb847931a63 100644
--- a/clients/client-workdocs/src/protocols/Aws_restJson1.ts
+++ b/clients/client-workdocs/src/protocols/Aws_restJson1.ts
@@ -557,7 +557,10 @@ export const serializeAws_restJson1DeleteDocumentVersionCommand = async (
   resolvedPath = __resolvedPath(resolvedPath, input, "DocumentId", () => input.DocumentId!, "{DocumentId}", false);
   resolvedPath = __resolvedPath(resolvedPath, input, "VersionId", () => input.VersionId!, "{VersionId}", false);
   const query: any = map({
-    deletePriorVersions: [() => input.DeletePriorVersions !== void 0, () => input.DeletePriorVersions!.toString()],
+    deletePriorVersions: [
+      __expectNonNull(input.DeletePriorVersions, `DeletePriorVersions`) != null,
+      () => input.DeletePriorVersions!.toString(),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -846,7 +849,7 @@ export const serializeAws_restJson1DescribeGroupsCommand = async (
   });
   const resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/api/v1/groups";
   const query: any = map({
-    searchQuery: [, input.SearchQuery!],
+    searchQuery: [, __expectNonNull(input.SearchQuery!, `SearchQuery`)],
     organizationId: [, input.OrganizationId!],
     marker: [, input.Marker!],
     limit: [() => input.Limit !== void 0, () => input.Limit!.toString()],
diff --git a/clients/client-worklink/src/protocols/Aws_restJson1.ts b/clients/client-worklink/src/protocols/Aws_restJson1.ts
index 44dda73ac306..d3501af87f6b 100644
--- a/clients/client-worklink/src/protocols/Aws_restJson1.ts
+++ b/clients/client-worklink/src/protocols/Aws_restJson1.ts
@@ -796,7 +796,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{ResourceArn}";
   resolvedPath = __resolvedPath(resolvedPath, input, "ResourceArn", () => input.ResourceArn!, "{ResourceArn}", false);
   const query: any = map({
-    tagKeys: [() => input.TagKeys !== void 0, () => (input.TagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.TagKeys, `TagKeys`) != null,
+      () => (input.TagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/clients/client-workspaces-web/src/protocols/Aws_restJson1.ts b/clients/client-workspaces-web/src/protocols/Aws_restJson1.ts
index 3ffa66db16b3..70fad116fd0f 100644
--- a/clients/client-workspaces-web/src/protocols/Aws_restJson1.ts
+++ b/clients/client-workspaces-web/src/protocols/Aws_restJson1.ts
@@ -208,7 +208,7 @@ export const serializeAws_restJson1AssociateBrowserSettingsCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/portals/{portalArn+}/browserSettings";
   resolvedPath = __resolvedPath(resolvedPath, input, "portalArn", () => input.portalArn!, "{portalArn+}", true);
   const query: any = map({
-    browserSettingsArn: [, input.browserSettingsArn!],
+    browserSettingsArn: [, __expectNonNull(input.browserSettingsArn!, `browserSettingsArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -233,7 +233,7 @@ export const serializeAws_restJson1AssociateNetworkSettingsCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/portals/{portalArn+}/networkSettings";
   resolvedPath = __resolvedPath(resolvedPath, input, "portalArn", () => input.portalArn!, "{portalArn+}", true);
   const query: any = map({
-    networkSettingsArn: [, input.networkSettingsArn!],
+    networkSettingsArn: [, __expectNonNull(input.networkSettingsArn!, `networkSettingsArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -258,7 +258,7 @@ export const serializeAws_restJson1AssociateTrustStoreCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/portals/{portalArn+}/trustStores";
   resolvedPath = __resolvedPath(resolvedPath, input, "portalArn", () => input.portalArn!, "{portalArn+}", true);
   const query: any = map({
-    trustStoreArn: [, input.trustStoreArn!],
+    trustStoreArn: [, __expectNonNull(input.trustStoreArn!, `trustStoreArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -284,7 +284,10 @@ export const serializeAws_restJson1AssociateUserAccessLoggingSettingsCommand = a
     "/portals/{portalArn+}/userAccessLoggingSettings";
   resolvedPath = __resolvedPath(resolvedPath, input, "portalArn", () => input.portalArn!, "{portalArn+}", true);
   const query: any = map({
-    userAccessLoggingSettingsArn: [, input.userAccessLoggingSettingsArn!],
+    userAccessLoggingSettingsArn: [
+      ,
+      __expectNonNull(input.userAccessLoggingSettingsArn!, `userAccessLoggingSettingsArn`),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -309,7 +312,7 @@ export const serializeAws_restJson1AssociateUserSettingsCommand = async (
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/portals/{portalArn+}/userSettings";
   resolvedPath = __resolvedPath(resolvedPath, input, "portalArn", () => input.portalArn!, "{portalArn+}", true);
   const query: any = map({
-    userSettingsArn: [, input.userSettingsArn!],
+    userSettingsArn: [, __expectNonNull(input.userSettingsArn!, `userSettingsArn`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1003,7 +1006,7 @@ export const serializeAws_restJson1GetTrustStoreCertificateCommand = async (
     true
   );
   const query: any = map({
-    thumbprint: [, input.thumbprint!],
+    thumbprint: [, __expectNonNull(input.thumbprint!, `thumbprint`)],
   });
   let body: any;
   return new __HttpRequest({
@@ -1335,7 +1338,10 @@ export const serializeAws_restJson1UntagResourceCommand = async (
   let resolvedPath = `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/tags/{resourceArn+}";
   resolvedPath = __resolvedPath(resolvedPath, input, "resourceArn", () => input.resourceArn!, "{resourceArn+}", true);
   const query: any = map({
-    tagKeys: [() => input.tagKeys !== void 0, () => (input.tagKeys! || []).map((_entry) => _entry as any)],
+    tagKeys: [
+      __expectNonNull(input.tagKeys, `tagKeys`) != null,
+      () => (input.tagKeys! || []).map((_entry) => _entry as any),
+    ],
   });
   let body: any;
   return new __HttpRequest({
diff --git a/private/aws-protocoltests-restjson/src/protocols/Aws_restJson1.ts b/private/aws-protocoltests-restjson/src/protocols/Aws_restJson1.ts
index d05789fd9a91..6266691e343e 100644
--- a/private/aws-protocoltests-restjson/src/protocols/Aws_restJson1.ts
+++ b/private/aws-protocoltests-restjson/src/protocols/Aws_restJson1.ts
@@ -2132,7 +2132,7 @@ export const serializeAws_restJson1MalformedTimestampQueryDefaultCommand = async
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/MalformedTimestampQueryDefault";
   const query: any = map({
     timestamp: [
-      () => input.timestamp !== void 0,
+      __expectNonNull(input.timestamp, `timestamp`) != null,
       () => (input.timestamp!.toISOString().split(".")[0] + "Z").toString(),
     ],
   });
@@ -2158,7 +2158,10 @@ export const serializeAws_restJson1MalformedTimestampQueryEpochCommand = async (
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/MalformedTimestampQueryEpoch";
   const query: any = map({
-    timestamp: [() => input.timestamp !== void 0, () => Math.round(input.timestamp!.getTime() / 1000).toString()],
+    timestamp: [
+      __expectNonNull(input.timestamp, `timestamp`) != null,
+      () => Math.round(input.timestamp!.getTime() / 1000).toString(),
+    ],
   });
   let body: any;
   return new __HttpRequest({
@@ -2182,7 +2185,10 @@ export const serializeAws_restJson1MalformedTimestampQueryHttpDateCommand = asyn
   const resolvedPath =
     `${basePath?.endsWith("/") ? basePath.slice(0, -1) : basePath || ""}` + "/MalformedTimestampQueryHttpDate";
   const query: any = map({
-    timestamp: [() => input.timestamp !== void 0, () => __dateToUtcString(input.timestamp!).toString()],
+    timestamp: [
+      __expectNonNull(input.timestamp, `timestamp`) != null,
+      () => __dateToUtcString(input.timestamp!).toString(),
+    ],
   });
   let body: any;
   return new __HttpRequest({