diff --git a/spec-compliance-matrix.md b/spec-compliance-matrix.md
index c327bfc94..13f5317b0 100644
--- a/spec-compliance-matrix.md
+++ b/spec-compliance-matrix.md
@@ -114,7 +114,7 @@ formats is required. Implementing more than one format is optional.
 | Instruments have kind.                                                                                                                                                       |          | +  | +    |    |    +   |      |        |     |      |     |   +  |       |
 | Instruments have an optional unit of measure.                                                                                                                                |          | +  | +    |    |    +   |      |        |     |      |  +  |   +  |       |
 | Instruments have an optional description.                                                                                                                                    |          | +  | +    |    |    +   |      |        |     |      |  +  |   +  |       |
-| An error is returned when multiple instruments are registered under the same `Meter` using the same `name`.                                                                  |          | +  | +    |    |    -   |      |        |     |      |     |   +  |       |
+| A valid instrument MUST be created and warning SHOULD be emitted when multiple instruments are registered under the same `Meter` using the same `name`.                                                                  |          |    |  +   |    |   +    |      |        |     |      |     |      |       |
 | It is possible to register two instruments with same `name` under different `Meter`s.                                                                                        |          | +  | +    |    |    +   |      |        |     |      |     |   +  |       |
 | Instrument names conform to the specified syntax.                                                                                                                            |          | -  | +    |    |    +   |      |        |     |      |     |   +  |       |
 | Instrument units conform to the specified syntax.                                                                                                                            |          | -  | +    |    |    +   |      |        |     |      |     |   +  |       |