How To Fix TG620 - *** RDDENTVM: Changes all DDXTT MODEFLAGs from '-' to ' '

SAP Error Message - Details

• Message type: E = Error

• Message class: TG - Messages for Upgrade Repository Switch

• Message number: 620

• Message text: *** RDDENTVM: Changes all DDXTT MODEFLAGs from '-' to ' '

Self-Explanatory Message

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• What is the cause and solution for SAP error message TG620 - *** RDDENTVM: Changes all DDXTT MODEFLAGs from '-' to ' ' ?

  The SAP error message TG620, specifically related to the RDDENTVM program, indicates that there is an issue with the mode flags in the DDXTT (Dynamic Data Transfer Table) that are set to a specific value ('-') and need to be changed to a blank (' '). This typically occurs in the context of background job processing or data transfer scenarios.
  Cause:
  
  Incorrect Mode Flags: The mode flags in the DDXTT table are not set correctly. The '-' flag usually indicates that the job is not ready for processing, while a blank (' ') indicates that it is ready.
  Job Scheduling Issues: There may be issues with how jobs are scheduled or executed, leading to incorrect status flags.
  Data Transfer Problems: If there are problems with data transfer processes, it can lead to inconsistencies in the mode flags.
  
  Solution:
  
  Check Job Status: Review the status of the background jobs that are related to the DDXTT table. Ensure that they are scheduled and executed correctly.
  Update Mode Flags: You may need to manually update the mode flags in the DDXTT table. This can typically be done through transaction codes like SE16 or SE11, but caution is advised as direct changes to database tables can lead to inconsistencies.
  Review Job Logs: Check the logs of the jobs that are failing or causing the issue. Look for any error messages or warnings that could provide more context.
  Re-schedule Jobs: If the jobs are not running as expected, try re-scheduling them or restarting the job processing.
  Consult SAP Notes: Look for any relevant SAP Notes that may address this specific error or provide patches or updates that could resolve the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM37 (to monitor jobs), SM21 (to check system logs), and ST22 (to check dumps).
  SAP Support: If the issue persists, consider reaching out to SAP support for assistance, especially if it is affecting production systems.
  Documentation: Review SAP documentation related to background processing and data transfer for best practices and troubleshooting steps.
  
  Precautions:
  
  Always back up data before making changes directly to database tables.
  Test any changes in a development or test environment before applying them to production.
  
  By following these steps, you should be able to diagnose and resolve the TG620 error related to the RDDENTVM program in SAP.