How To Fix CNV_00001255 - Table &1 field &2 is not filled by the field mapping of table &3

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 255

• Message text: Table &1 field &2 is not filled by the field mapping of table &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_00001255 - Table &1 field &2 is not filled by the field mapping of table &3 ?

  The SAP error message CNV_00001255 indicates that there is an issue with the data mapping during a data migration or conversion process. Specifically, it means that a certain field in a target table (denoted as &1) is not being populated as expected because the corresponding field mapping from a source table (denoted as &3) is not providing a value for the specified field (denoted as &2).
  Cause:
  
  Missing Mapping: The field in the source table does not have a corresponding mapping defined for the target field.
  Data Transformation Issues: There may be a transformation rule that is not correctly defined or is missing, leading to the target field not being populated.
  Data Quality Issues: The source data might not contain valid or expected values that can be mapped to the target field.
  Configuration Errors: There could be configuration issues in the data migration tool or settings that prevent the mapping from being recognized.
  
  Solution:
  
  Check Field Mapping: Review the mapping configuration for the data migration process. Ensure that the field in the source table is correctly mapped to the target field.
  Define Missing Mappings: If the mapping is missing, define it in the mapping configuration to ensure that the target field receives the appropriate value from the source.
  Validate Source Data: Check the source data for completeness and correctness. Ensure that the data in the source table is valid and can be mapped to the target field.
  Review Transformation Rules: If there are transformation rules involved, verify that they are correctly defined and applied during the migration process.
  Consult Documentation: Refer to the SAP documentation or migration tool documentation for specific guidelines on how to handle field mappings and transformations.
  Testing: After making changes, perform a test migration to ensure that the issue is resolved and that the target field is populated as expected.
  
  Related Information:
  
  Transaction Codes: Depending on the migration tool being used (e.g., SAP S/4HANA Migration Cockpit, LSMW), you may need to use specific transaction codes to access the mapping configuration.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error message.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.