How To Fix CNV20400024 - No temporary duplicates occur during the conversion

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20400 - Message class CNV20400

• Message number: 024

• Message text: No temporary duplicates occur during the conversion

What causes this issue?

During the analysis of the mapping table, no entries of type A -> B and
B->C were found. Consequently, it cannnot happen that A is renamed into
B before B has been renamed into C, which would mean that B would
temporarily exist twice (<DS:TX.CNV_MBT_TEMP_DUPLICATES>temporary
duplicate</>).

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20400024 - No temporary duplicates occur during the conversion ?

  The SAP error message CNV20400024 indicates that during a data conversion process, the system has detected that there are no temporary duplicates present in the data being processed. This message is typically associated with the SAP S/4HANA Migration Cockpit or other data migration tools used in SAP systems.
  Cause:
  The error message suggests that the system expected to find temporary duplicates in the data set but did not find any. This can occur for several reasons:
  
  Data Quality: The source data may already be clean and free of duplicates, which is a positive outcome.
  Configuration Issues: There may be a misconfiguration in the migration settings or parameters that are supposed to identify duplicates.
  Incorrect Mapping: The mapping of fields or data structures may not be set up correctly, leading to the system not recognizing potential duplicates.
  Process Logic: The logic defined in the conversion process may not be correctly identifying duplicates due to customizations or specific business rules.
  
  Solution:
  To resolve this issue, consider the following steps:
  
  Review Data: Check the source data to confirm that it is indeed free of duplicates. If duplicates are expected, ensure that they are correctly formatted and identifiable.
  Check Configuration: Review the configuration settings in the migration tool to ensure that the parameters for identifying duplicates are correctly set.
  Mapping Verification: Verify the mapping of fields in the migration cockpit to ensure that all relevant fields are included and correctly defined.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using to understand the expected behavior and configuration options.
  Logs and Traces: Check the logs and traces generated during the migration process for any additional information or warnings that might provide context for the error.
  Testing: If possible, run a test migration with a smaller subset of data to see if the issue persists and to isolate the cause.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling data migration issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for any best practices or troubleshooting tips.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to proceed with your data conversion successfully.