How To Fix CNV20200254 - &2 mapping entries stored in table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20200 - Messages for development class CNV_20200

• Message number: 254

• Message text: &2 mapping entries stored in table &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20200254 - &2 mapping entries stored in table &1 ?

  The SAP error message CNV20200254 typically relates to issues encountered during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This specific error indicates that there are mapping entries stored in a particular table that are causing a conflict or issue during the migration process.
  Cause:
  The error message CNV20200254 usually arises due to one of the following reasons:
  
  Duplicate Mapping Entries: There may be duplicate or conflicting mapping entries in the specified table, which can lead to ambiguity during the data migration process.
  Missing or Incomplete Mapping: The mapping entries required for the conversion process might be incomplete or missing, leading to errors when the system attempts to process the data.
  Data Integrity Issues: There may be issues with the integrity of the data being migrated, such as invalid references or relationships that are not properly defined.
  
  Solution:
  To resolve the CNV20200254 error, you can take the following steps:
  
  
  Check Mapping Entries:
  
  Access the specified table (indicated by &1 in the error message) and review the mapping entries stored there.
  Look for any duplicate entries or inconsistencies that may be causing the error.
  
  
  
  Clean Up Duplicates:
  
  If you find duplicate mapping entries, remove or consolidate them to ensure that each entry is unique and correctly defined.
  
  
  
  Complete Missing Mappings:
  
  Ensure that all necessary mapping entries are present and correctly configured. If any mappings are missing, add them as needed.
  
  
  
  Validate Data:
  
  Perform a data validation check to ensure that the data being migrated is complete and adheres to the required formats and relationships.
  
  
  
  Re-run the Migration:
  
  After making the necessary corrections, re-run the migration process to see if the error persists.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration process you are using for additional guidance and troubleshooting steps.
  
  
  
  Seek SAP Support:
  
  If the issue persists after following the above steps, consider reaching out to SAP support for further assistance, providing them with the error details and any relevant context.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for data migration, as it may contain useful information regarding mapping and data conversion.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the underlying issues causing the CNV20200254 error in your SAP environment.