A Try-Catch Block is the correct element because the requirement is controlled error handling. The Data Mapper Load can fail because of a validation rule, but the Integration Procedure must keep running and return a user-friendly error message rather than immediately terminating. A Group element organizes or conditionally executes steps, but it does not provide exception handling by itself. A Set Values element can prepare the friendly message after the error is caught, but it cannot catch the failure. A Response Action returns the final payload, but it should not wrap the risky operation. Salesforce Integration Procedure guidance specifically identifies Try-Catch Blocks as the mechanism for handling errors inside Integration Procedures.

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