Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 540
Message text: &1 -> &2 with priority &3 got added to the secondary cost element mapping
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The SAP error message CNV_20100540 typically relates to issues encountered during the mapping of cost elements in the context of a data migration or conversion process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that a cost element mapping has been added to the secondary cost element mapping, which may not align with the expected configuration or data structure.
Cause: Inconsistent Mapping: The error often arises when there is an inconsistency in the mapping of primary and secondary cost elements. This could be due to missing or incorrect entries in the mapping tables.
Configuration Issues: There may be configuration issues in the controlling area or cost element settings that prevent proper mapping. Data Integrity Issues: The source data may contain entries that do not match the expected format or structure, leading to errors during the mapping process.
Solution: Review Mapping Entries: Check the mapping entries for cost elements in the
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