How To Fix CNV_20200_CHECK327 - Double mapping entry provided for source securit. acct &1 in CoCd &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20200_CHECK - Messages for check functions (company code merge)

• Message number: 327

• Message text: Double mapping entry provided for source securit. acct &1 in CoCd &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20200_CHECK327 - Double mapping entry provided for source securit. acct &1 in CoCd &2 ?

  The SAP error message CNV_20200_CHECK327 indicates that there is a double mapping entry for a source security account in a specific company code. This typically occurs during data migration or conversion processes, particularly when using SAP's Conversion Tools or during the implementation of SAP S/4HANA.
  Cause:
  The error arises when the system detects that there are multiple mapping entries for the same source security account in the specified company code. This can happen due to:
  
  Duplicate Entries: There may be duplicate entries in the mapping table for the same source account.
  Incorrect Configuration: The mapping configuration may have been set up incorrectly, leading to multiple mappings for the same account.
  Data Migration Issues: During data migration, if the source data contains duplicates or if the mapping logic is not correctly defined, this error can occur.
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Mapping Entries:
  
  Go to the mapping table where the source security accounts are defined.
  Look for duplicate entries for the source security account &1 in company code &2.
  Remove or consolidate duplicate entries to ensure that each source account has a unique mapping.
  
  
  
  Review Configuration:
  
  Verify the configuration settings for the mapping process.
  Ensure that the mapping logic is correctly defined and that there are no overlaps in the source accounts.
  
  
  
  Data Validation:
  
  Validate the source data to ensure that there are no duplicates before the migration process.
  Clean up the data if necessary to prevent duplicates from being introduced.
  
  
  
  Testing:
  
  After making the necessary changes, re-run the mapping process to check if the error persists.
  Conduct thorough testing to ensure that the mapping works as expected without any further issues.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to check the mapping tables.
  Documentation: Refer to SAP documentation related to data migration and mapping processes for more detailed guidance.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert who specializes in data migration and conversion processes.