Message type: E = Error
Message class:  CNV_00001 - Message class for CWB settings maintenance programs 
Message number: 265
Message text: Table &1 field &2 is not transfered by the field mapping of table &3
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The SAP error message CNV_00001265 indicates that a specific field in a table is not being transferred due to issues with the field mapping during a data migration or conversion process. This error typically arises in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer processes.
Cause: Field Mapping Issues: The field in question (field &2 in table &1) is not included in the mapping configuration for the source and target tables (table &3). This could be due to: The field not being defined in the mapping template. The field being excluded intentionally or unintentionally. A mismatch in the data structure between the source and target systems. Data Structure Changes: If there have been changes in the data model (e.g., fields added or removed) in the target system, the mapping may not reflect these changes. Configuration Errors: Incorrect configuration settings in the migration tool or the mapping process
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