How To Fix CNV20305706 - Entry for field &1-&2 already exists in CNVFIELDS

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20305 - Messages for conversion packages in CO

• Message number: 706

• Message text: Entry for field &1-&2 already exists in CNVFIELDS

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20305706 - Entry for field &1-&2 already exists in CNVFIELDS ?

  The SAP error message CNV20305706 indicates that there is a duplicate entry for a specific field in the CNVFIELDS table during a data migration or conversion process. This error typically arises in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data conversion scenarios.
  Cause:
  The error occurs when the system detects that an entry for the specified field (indicated by &1 and &2 in the error message) already exists in the CNVFIELDS table. This can happen due to:
  
  Duplicate entries being created during the data migration process.
  Incorrect configuration or mapping of fields in the migration project.
  Manual entries or modifications that lead to conflicts.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check for Duplicates:
  
  Access the CNVFIELDS table in the SAP system and search for the entries corresponding to the field names indicated in the error message.
  Identify any duplicate entries that may exist.
  
  
  
  Remove or Modify Duplicates:
  
  If duplicates are found, you may need to delete or modify the conflicting entries. Ensure that you have a backup of the data before making any changes.
  If the duplicates are not needed, you can delete them. If they are needed, you may need to adjust the configuration to ensure that only one entry remains.
  
  
  
  Review Migration Configuration:
  
  Check the configuration settings in your migration project to ensure that fields are correctly mapped and that there are no conflicts in the definitions.
  Ensure that the migration templates or mappings do not inadvertently create duplicate entries.
  
  
  
  Re-run the Migration:
  
  After resolving the duplicates, re-run the migration process to see if the error persists.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration tool you are using for any additional guidance or troubleshooting steps.
  
  
  
  Seek Support:
  
  If the issue persists after following the above steps, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific scenario.
  
  
  
  Related Information:
  
  CNVFIELDS Table: This table is used in the context of data migration and contains field mappings and definitions for the migration process.
  Data Migration Tools: Familiarize yourself with the specific SAP data migration tools you are using, as they may have unique configurations and requirements.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional solutions related to this error message.
  
  By following these steps, you should be able to identify and resolve the cause of the CNV20305706 error in your SAP system.