How To Fix CNV_00001256 - All fields of table &1 are filled by the field mapping of table &2

CNV_00001256 - Overview

• Message type: E = Error

• Message class: CNV_00001 - Message class for CWB settings maintenance programs

• Message number: 256

• Message text: All fields of table &1 are filled by the field mapping of table &2

Self-Explanatory Message

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CNV_00001256 - Details

• The SAP error message CNV_00001256 indicates that all fields of a specified table (denoted as &1) are filled by the field mapping of another table (denoted as &2). This error typically arises during data migration or conversion processes, particularly when using SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or the SAP Data Services.
  
  Cause:
  The error occurs when:
  
  The target table (&1) is being populated with data from the source table (&2), but the mapping configuration is such that all fields in the target table are being filled from the source table.
  This situation may arise due to incorrect or incomplete field mapping configurations, where the system expects certain fields to be populated differently or not at all.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Field Mapping:
  
  Check the field mapping configuration between the source and target tables. Ensure that the mapping is set up correctly and that it