Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 322
Message text: No N:1 mapping of G/L accounts or cost elements
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The SAP error message CNV_20100322 No N:1 mapping of G/L accounts or cost elements typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is no valid mapping defined for the General Ledger (G/L) accounts or cost elements that are being processed.
Cause: Missing Mapping Entries: The error usually arises when the system cannot find a corresponding mapping entry for a G/L account or cost element in the mapping table. This can happen if the mapping was not set up correctly or if the required entries were omitted. Incorrect Configuration: If the configuration for the migration or conversion process is incorrect, it may lead to this error. Data Issues: The source data may contain G/L accounts or cost elements that do not exist in the target system or are not included in the mapping.
Solution: Check Mapping Configuration: Go to the mapping configuration
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