Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 673
Message text: Customizing for new CoA &1 not yet defined in mapping
The program found, that the customizing for the new chart of accounts is
not maintained in the mapping.
The customizing for the new chart of accounts must be defined at this
point of time in the mapping.
Maintain the missing information in the mapping.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20100673 indicates that there is a problem with the mapping of a new Chart of Accounts (CoA) in the system. This error typically arises during data migration or when configuring a new CoA in the SAP system, particularly in the context of the SAP S/4HANA migration or when using the SAP Conversion Tool.
Cause: The error message CNV_20100673 occurs when: A new Chart of Accounts has been created or defined, but the necessary customizing settings for that CoA have not been completed. The mapping for the new CoA is missing in the relevant configuration tables, which means that the system does not know how to handle the new CoA during data processing or migration. The system is trying to access a CoA that has not been properly set up in the mapping configuration.
Solution: To resolve this error, you can follow these steps: Check Customizing Settings: Go to the SAP Customizing Implementation Guide (IMG) and
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