How To Fix CNV_PE_POST837 - Start building the undo transfer lists

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_POST -

• Message number: 837

• Message text: Start building the undo transfer lists

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_POST837 - Start building the undo transfer lists ?

  The SAP error message "CNV_PE_POST837 Start building the undo transfer lists" typically occurs during the execution of a data migration or conversion process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error is related to the process of creating undo transfer lists, which are necessary for rolling back changes if an error occurs during the data transfer.
  Cause:
  
  Data Consistency Issues: The error may arise if there are inconsistencies in the data being processed, such as missing or invalid entries.
  Configuration Problems: Incorrect configuration settings in the migration tool or the source system can lead to this error.
  System Performance: If the system is under heavy load or if there are performance issues, it may not be able to build the undo transfer lists in a timely manner.
  Authorization Issues: Lack of necessary authorizations for the user executing the migration can also trigger this error.
  Technical Errors: There may be underlying technical issues, such as database locks or connectivity problems.
  
  Solution:
  
  Check Data Consistency: Review the data being migrated for any inconsistencies or errors. Ensure that all required fields are populated and that the data adheres to the expected formats.
  Review Configuration: Verify the configuration settings in the migration tool and ensure they are correctly set up for the data transfer.
  Monitor System Performance: Check the system performance and resource utilization. If the system is under heavy load, consider scheduling the migration during off-peak hours.
  Check Authorizations: Ensure that the user executing the migration has the necessary authorizations to perform the operation.
  Review Logs: Check the logs for any additional error messages or warnings that may provide more context about the issue.
  Retry the Process: After addressing any identified issues, retry the migration process to see if the error persists.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for the migration tool being used, as it may contain specific guidelines and best practices for resolving common issues.
  Community Forums: Engage with the SAP Community or other forums where users may have encountered similar issues and can share their experiences and solutions.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP Support for further assistance.