Message type: E = Error
Message class:  CNV_20900 - Message class for package CNV_20900 
Message number: 107
Message text: Old account group &1 does not exist
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The SAP error message CNV_20900107 indicates that the system is unable to find an old account group specified in a conversion or migration process. This error typically arises during data migration activities, especially when using tools like the SAP S/4HANA Migration Cockpit or other data conversion tools.
Cause: Missing Account Group: The specified old account group does not exist in the system. This could be due to: The account group was deleted or never created. A typo in the account group name or number. The account group is not included in the migration data. Incorrect Configuration: The configuration settings for the migration might not be set up correctly, leading to references to non-existent account groups. Data Mapping Issues: There may be issues in the mapping of old account groups to new ones, especially if the mapping was not done correctly or completely.
Solution: Verify Account Group: Check if the old account group specified in the error message exists in
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