How To Fix TRS0031 - External position not saved; it is locked by user &1

SAP Error Message - Details

• Message type: E = Error

• Message class: TRS0 - Messages for Reconciliation

• Message number: 031

• Message text: External position not saved; it is locked by user &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message TRS0031 - External position not saved; it is locked by user &1 ?

  The SAP error message TRS0031 indicates that an external position (such as a position in a project or a resource) cannot be saved because it is currently locked by another user. This locking mechanism is a part of SAP's concurrency control to prevent data inconsistencies when multiple users are trying to access or modify the same data simultaneously.
  Cause:
  
  User Lock: Another user is currently editing the external position, which prevents other users from making changes until the lock is released.
  Session Timeout: A user may have left a session open, causing the lock to persist even if they are no longer actively working on it.
  System Error: Occasionally, a system error or crash may leave a lock in place without a user actively holding it.
  
  Solution:
  
  Wait and Retry: If the lock is held by another user, the simplest solution is to wait until that user has finished their work and released the lock. You can then try to save your changes again.
  Identify the Locking User: You can use transaction code SM12 to view the list of locks in the system. This will show you which user is holding the lock on the external position. If necessary, you can contact that user to coordinate the release of the lock.
  Release the Lock: If you have the necessary authorizations, you can manually delete the lock from transaction SM12. However, this should be done with caution, as it may lead to data inconsistencies if the other user is still working on the data.
  Check for Session Issues: If you suspect that a session is stuck, you can check for any open sessions in transaction SM04 and log off any inactive sessions that may be holding locks.
  Consult with IT Support: If the issue persists or if you are unsure about how to proceed, it may be best to consult with your IT support team or SAP Basis team for assistance.
  
  Related Information:
  
  Lock Management: Understanding how SAP handles locks can help in troubleshooting similar issues in the future. Locks are typically managed at the database level to ensure data integrity.
  User Roles and Authorizations: Ensure that users have the appropriate roles and authorizations to manage locks effectively.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to locking mechanisms or known bugs in the version of SAP you are using.
  
  By following these steps, you should be able to resolve the TRS0031 error and successfully save your changes.