[Home](./index.md) > [@contract-case/case-definition-dsl](./case-definition-dsl.md) > [interactions](./case-definition-dsl.interactions.md) > [functions](./case-definition-dsl.interactions.functions.md) > [ThrowingFunctionExecutionExample](./case-definition-dsl.interactions.functions.throwingfunctionexecutionexample.md) > [message](./case-definition-dsl.interactions.functions.throwingfunctionexecutionexample.message.md) ## interactions.functions.ThrowingFunctionExecutionExample.message property A test equivalence matcher for the message from this exception. In general, it's best to rely on the class of the exception instead of the specific error message **Signature:** ```typescript readonly message?: AnyMatcherOrData; ```