How To Fix /SAPAPO/TDL_DAO134 - Request is locked

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/TDL_DAO -

• Message number: 134

• Message text: Request is locked

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/TDL_DAO134 - Request is locked ?

  The SAP error message /SAPAPO/TDL_DAO134 Request is locked typically occurs in the context of SAP Advanced Planning and Optimization (APO) when a request (such as a planning or data transfer request) is locked, preventing further processing. This can happen for several reasons, including:
  Causes:
  
  Concurrent Access: Another user or process is currently accessing or modifying the same request, leading to a lock.
  Incomplete Processing: A previous process that was supposed to release the lock may have failed or been interrupted.
  System Errors: Technical issues or system errors may have caused the request to remain locked.
  Long-Running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected.
  
  Solutions:
  
  
  Identify the Lock:
  
  Use transaction code SM12 to check for locks in the system. You can filter by user or object to find the specific request that is locked.
  Look for the relevant entries that correspond to the request in question.
  
  
  
  Release the Lock:
  
  If you have the necessary authorizations, you can manually delete the lock entry in SM12. Be cautious when doing this, as it may affect other users or processes.
  If the lock is held by a specific user, you may need to communicate with that user to determine if they can release the lock.
  
  
  
  Check for Background Jobs:
  
  Sometimes, background jobs may hold locks. Use transaction SM37 to check for any running or failed jobs that might be related to the locked request.
  
  
  
  Restart the Process:
  
  If the lock is due to a failed process, you may need to restart the relevant transaction or process after releasing the lock.
  
  
  
  System Monitoring:
  
  Implement monitoring to track long-running transactions and locks to prevent future occurrences.
  
  
  
  Related Information:
  
  Documentation: Refer to SAP Notes and documentation related to APO and locking mechanisms for more detailed troubleshooting steps.
  SAP Support: If the issue persists or if you are unsure about releasing locks, consider reaching out to SAP support for assistance.
  User Training: Ensure that users are trained on how to handle locks and understand the implications of concurrent access in the system.
  
  By following these steps, you should be able to resolve the /SAPAPO/TDL_DAO134 Request is locked error and prevent it from occurring in the future.