How To Fix CNVMBTRFC129 - Modify RFC versions failed (see table cnvmbtdestvers)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVMBTRFC - Messages used in RFC Management and its objects

• Message number: 129

• Message text: Modify RFC versions failed (see table cnvmbtdestvers)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNVMBTRFC129 - Modify RFC versions failed (see table cnvmbtdestvers) ?

  The SAP error message CNVMBTRFC129: Modify RFC versions failed (see table cnvmbtdestvers) typically occurs during the execution of a conversion or migration process, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. This error indicates that there was a failure in modifying the RFC (Remote Function Call) versions in the specified table.
  Causes:
  
  RFC Destination Issues: The RFC destination might not be correctly configured or might be pointing to an invalid or non-existent system.
  Authorization Problems: The user executing the operation may not have the necessary authorizations to modify the RFC versions.
  Network Issues: There could be network connectivity problems between the systems involved in the RFC call.
  Table Locking: The table cnvmbtdestvers might be locked by another process, preventing modifications.
  Data Consistency Issues: There may be inconsistencies or corruption in the data within the cnvmbtdestvers table.
  
  Solutions:
  
  
  Check RFC Configuration:
  
  Go to transaction SM59 and verify the configuration of the RFC destination. Ensure that it is correctly set up and that the target system is reachable.
  
  
  
  Review Authorizations:
  
  Ensure that the user executing the migration has the necessary authorizations to modify RFC destinations. Check roles and profiles assigned to the user.
  
  
  
  Network Connectivity:
  
  Test the network connection between the systems involved. You can use tools like ping or telnet to check connectivity.
  
  
  
  Check for Table Locks:
  
  Use transaction SM12 to check if there are any locks on the cnvmbtdestvers table. If there are locks, identify the user/process holding the lock and resolve it.
  
  
  
  Data Consistency Check:
  
  Perform a consistency check on the cnvmbtdestvers table. You may need to consult with your SAP Basis team or use transaction SE11 to analyze the table structure and data.
  
  
  
  Review Logs:
  
  Check the application logs (transaction SLG1) for more detailed error messages that could provide additional context on the failure.
  
  
  
  Re-run the Process:
  
  After addressing the above issues, try to re-run the migration or conversion process to see if the error persists.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide patches/updates.
  Documentation: Review the official SAP documentation for the specific migration or conversion tool you are using, as it may contain troubleshooting steps or best practices.
  Community Forums: Consider searching or posting on SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.