How To Fix QT431 - Inspection lot &1 is currently blocked by another user

SAP Error Message - Details

• Message type: E = Error

• Message class: QT - QM: Inspection during production (with inspection points)

• Message number: 431

• Message text: Inspection lot &1 is currently blocked by another user

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message QT431 - Inspection lot &1 is currently blocked by another user ?

  The SAP error message QT431, which states "Inspection lot &1 is currently blocked by another user," typically occurs when a user attempts to access or modify an inspection lot that is currently being processed or locked by another user. This can happen in various scenarios, such as during quality inspections, when trying to post results, or when attempting to change the status of the inspection lot.
  Cause:
  
  Concurrent Access: Another user is currently working on the same inspection lot, which causes a lock on that lot.
  Long-running Transactions: If a user has a long-running transaction that involves the inspection lot, it may remain locked for an extended period.
  System Configuration: Certain configurations in the SAP system may lead to locks being held longer than necessary.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the other user to complete their transaction and then try again.
  Identify the Lock: Use transaction code SM12 to check for locks on the inspection lot. You can look for the user who is holding the lock and the transaction they are executing.
  Contact the User: If you identify the user holding the lock, you can contact them to see if they can complete their work or release the lock.
  Release the Lock: If necessary and if you have the appropriate permissions, you can manually delete the lock entry in transaction SM12. However, this should be done with caution, as it may disrupt the other user's work.
  Check for Background Jobs: Sometimes, background jobs may hold locks. Check transaction SM37 to see if any background jobs are running that might be affecting the inspection lot.
  Review System Configuration: If this issue occurs frequently, it may be worth reviewing the system configuration and user access patterns to minimize locking issues.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM37: To monitor background jobs.
  QA32: To display inspection lots.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide patches related to inspection lot locking.
  User Training: Ensure that users are trained on how to properly handle inspection lots to minimize locking issues.
  
  If the problem persists or if you are unsure about taking any actions, it may be best to consult with your SAP Basis or support team for further assistance.