Message type: E = Error
Message class:  CNV_21539 - Absence Type Rename 
Message number: 015
Message text: For MOABW &1, old and new attendance/absence types &2 are identical
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The SAP error message CNV_21539015 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This specific error indicates that there is an issue with the attendance or absence types being processed, where the old and new types are found to be identical.
Cause: The error message CNV_21539015 arises when the system detects that the old attendance/absence type and the new attendance/absence type are the same. This can happen due to: Data Mapping Issues: During the migration process, the mapping of old attendance/absence types to new ones may have been incorrectly configured, leading to a situation where the same type is being mapped to itself. Duplicate Entries: There may be duplicate entries in the data being migrated, causing the system to interpret that the same type is being processed for both old and new. Configuration Errors: There might be a misconfiguration in the system settings or
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