How To Fix CNV_PE_POST839 - Start undo transfer of items

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_POST -

• Message number: 839

• Message text: Start undo transfer of items

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_POST839 - Start undo transfer of items ?

  The SAP error message "CNV_PE_POST839 Start undo transfer of items" typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or other data transfer tools. This error indicates that there was an issue during the transfer of items, and the system is attempting to undo or roll back the changes made during the migration process.
  Causes:
  
  Data Integrity Issues: There may be inconsistencies or errors in the data being transferred, such as missing mandatory fields or invalid data formats.
  Configuration Errors: Incorrect configuration settings in the migration cockpit or the source system can lead to transfer failures.
  System Performance: If the system is under heavy load or if there are performance issues, it may cause timeouts or failures during the data transfer.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to perform the data transfer.
  Technical Errors: Bugs or issues in the migration tool or the underlying SAP system can also lead to this error.
  
  Solutions:
  
  Check Data Quality: Review the data being migrated for any inconsistencies or errors. Ensure that all mandatory fields are filled and that the data adheres to the required formats.
  Review Configuration: Verify the configuration settings in the migration cockpit and ensure that they are correctly set up for the data transfer.
  Monitor System Performance: Check the system performance and ensure that it is not overloaded. If necessary, schedule the migration during off-peak hours.
  Check Authorizations: Ensure that the user executing the migration has the necessary authorizations to perform the data transfer.
  Review Logs: Check the migration logs for more detailed error messages that can provide insights into what went wrong during the transfer.
  Retry the Migration: After addressing the identified issues, attempt to rerun the migration process.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on troubleshooting.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit for best practices and troubleshooting tips.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.