Message type: E = Error
Message class:  CNV_21524 - Payroll Area Rename 
Message number: 015
Message text: Old and new payroll areas &1 are identical
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The SAP error message CNV_21524015, which states "Old and new payroll areas &1 are identical," typically occurs during a data migration or conversion process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system has detected that the old payroll area and the new payroll area being assigned are the same, which is not allowed in the context of the operation being performed.
Cause: Identical Payroll Areas: The primary cause of this error is that the payroll area being assigned for the new configuration is the same as the existing payroll area. This can happen if the migration or conversion process is incorrectly set up or if there is a misunderstanding of the payroll area assignments.
Configuration Issues: There may be issues in the configuration settings or mapping tables that lead to the same payroll area being assigned for both old and new.
Solution: Check Configuration: Review the
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