How To Fix CNV20400204 - Field &1-&2 was converted in split, but is set to NOTUSE='X' in merge

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20400 - Message class CNV20400

• Message number: 204

• Message text: Field &1-&2 was converted in split, but is set to NOTUSE='X' in merge

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20400204 - Field &1-&2 was converted in split, but is set to NOTUSE='X' in merge ?

  The SAP error message CNV20400204 typically occurs during data migration processes, particularly when using the SAP S/4HANA Migration Cockpit or other data conversion tools. This error indicates that a field was converted in a split operation but is marked as "not used" in the merge operation. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Data Migration Process: The error arises when there is a discrepancy between the data conversion steps. Specifically, it indicates that a field (denoted as &1-&2) was processed in a split operation but is not being utilized in the subsequent merge operation.
  Configuration Issues: The configuration settings for the data migration might not align correctly, leading to fields being marked as not used when they should be included.
  Mapping Errors: There may be issues in the mapping of fields between the source and target systems, causing certain fields to be excluded from the merge process.
  
  Solution:
  
  Review Mapping Configuration: Check the mapping configuration for the data migration. Ensure that the fields in question are correctly mapped and that their usage is consistent across both split and merge operations.
  Adjust Field Settings: If the field is indeed required in the merge operation, update the settings to ensure it is not marked as NOTUSE='X'. This may involve modifying the transformation rules or the data structure.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be guidelines or best practices for handling such errors.
  Test Migration: After making adjustments, perform a test migration to verify that the changes resolve the error and that data integrity is maintained.
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who specializes in data migration.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on data migration issues.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it provides tools and guidelines for data migration.
  Data Model Changes: Be aware of any changes in the data model between the source and target systems, as these can impact how fields are handled during migration.
  
  By addressing the mapping and configuration issues, you should be able to resolve the CNV20400204 error and successfully complete your data migration.