Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 065
Message text: Tax category for account &1 differs from that for account &2 in CoCd &3
Accounts &V1& and &V2& have different values for the Tax
category indicator in the company code &V3&.
These accounts are to be converted into account &V4&. (SKB1-MWSKZ)
The conversion can take place anyway.
The mapping table may have to be adapted.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20100065 indicates a discrepancy in the tax category settings for two different accounts within the same company code (CoCd). This error typically arises during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: The error occurs when: Two accounts (account &1 and account &2) have different tax categories assigned to them, but they are expected to have the same tax category within the same company code (CoCd &3). This can happen due to inconsistencies in the configuration of the accounts in the General Ledger (G/L) settings or during the data migration process where the tax categories were not aligned properly.
Solution: To resolve this error, you can take the following steps: Check Account Configuration: Go to the transaction code FS00 (G/L Account Master Data) and check the tax category settings for both accounts (account &1 and account &2). Ensure that both accounts have the same tax category
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