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If a command is received in which both the multi instance body, as well as the nested element gets terminated we should be able to handle this without exceptions.

A command could contain multiple terminate instruction that result in the termination of the same element instance. For example, when we have a sub process and a nested element. If both this sub process and the nested element are part of the terminate instructions, the nested element will be terminated twice.

When we receive the command we verify that all instances exist. However, once the first terminate instruction terminates the element, the instance no longer exist for the second terminate instruction. When this occurs we should ignore the terminate instruction.