Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 058
Message text: G/L account &1 is merged with secondary cost element &2
According to the mapping table, the G/L account &V1& is
to be merged with a secondary cost element into target
account &V3&.
Secondary cost elements cannot be merged with G/L accounts.
Conversion cannot take place.
Change the mapping table accordingly.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20100058 indicates that a General Ledger (G/L) account has been merged with a secondary cost element. This typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: The error arises when there is a conflict between the G/L account and the secondary cost element during the migration process. This can happen if: The G/L account is being used in a way that conflicts with the secondary cost element. The mapping of accounts during the migration is incorrect, leading to the merging of accounts that should remain separate. There are inconsistencies in the configuration of the accounts in the source system.
Solution: To resolve this error, you can take the following steps: Review the Mapping: Check the mapping of G/L accounts and secondary cost elements in your migration settings. Ensure that they are correctly defined and that there are no unintended merges. Check Configuration: Verify the
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