How To Fix CNV_00001187 - Method parameter &1 is not assigned to a source table field

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 187

• Message text: Method parameter &1 is not assigned to a source table field

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_00001187 - Method parameter &1 is not assigned to a source table field ?

  The SAP error message CNV_00001187 indicates that a method parameter in a conversion program is not correctly assigned to a source table field. This typically occurs during data migration or conversion processes, particularly when using SAP's data migration tools like the SAP S/4HANA Migration Cockpit or other custom conversion programs.
  Cause:
  
  Missing Mapping: The method parameter is expected to be mapped to a field in the source table, but the mapping is either missing or incorrectly defined.
  Incorrect Configuration: The configuration of the data migration or conversion program may not align with the source data structure.
  Changes in Data Structure: If the source table structure has changed (e.g., fields added, removed, or renamed), the existing mappings may no longer be valid.
  Custom Code Issues: If custom code is involved, there may be issues in the logic that assigns values to method parameters.
  
  Solution:
  
  Check Mapping Configuration: Review the mapping configuration for the conversion program. Ensure that all method parameters are correctly assigned to the corresponding fields in the source table.
  Update Data Structure: If there have been changes to the source table structure, update the mapping accordingly to reflect these changes.
  Debugging: If you have access to the ABAP code, you can debug the method to see where the assignment is failing. Look for the specific method and check how parameters are being assigned.
  Consult Documentation: Refer to the documentation for the specific conversion program you are using. There may be specific guidelines or requirements for mapping fields.
  Test with Sample Data: Run tests with sample data to ensure that the mappings work as expected. This can help identify any issues before running the full migration.
  Consult SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  
  Related Information:
  
  SAP Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, familiarize yourself with its mapping and configuration options.
  Data Migration Tools: Understand the tools and methodologies available for data migration in SAP, including LSMW, BAPIs, and custom ABAP programs.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if it involves standard SAP functionality.
  
  By following these steps, you should be able to identify and resolve the issue related to the error message CNV_00001187.