Message type: E = Error
Message class:  CNV20410 - message class for package 20410 (operating concern merge) 
Message number: 045
Message text: Field mapping of source table &1: Mapping onto target field &2
Field mapping of source table &V1&:
There is a field mapping for target field &V2&.
Selected fields (fixed characteristics, fixed basic key figures,
technical fields, fixed units) are not allowed to be mapped.
Error
Remove the field mapping for target field &V2& in the table mapping of
source table &V1&.
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 CNV20410045 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is an issue with the field mapping between the source table and the target field in the migration process.
Cause: The error message CNV20410045 is triggered when: Field Mapping Issues: The source field from the source table cannot be mapped correctly to the target field in the target table. This could be due to: Data type mismatches (e.g., trying to map a character field to a numeric field). Missing fields in the target structure. Incorrect field names or configurations in the mapping settings. Data Quality Issues: The data in the source table may not meet the requirements of the target field, such as: Invalid values that cannot be converted. Length restrictions being violated. Configuration Errors: There may be issues in the configuration of the migration project, such as incorrect
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