How To Fix SWN129 - Data locked by user &1

SAP Error Message - Details

• Message type: E = Error

• Message class: SWN - WF Notif: Messages

• Message number: 129

• Message text: Data locked by user &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SWN129 - Data locked by user &1 ?

  The SAP error message SWN129, which states "Data locked by user &1," typically occurs in the context of the SAP Workflow Notification (SWN) or when trying to access or modify data that is currently locked by another user. This locking mechanism is a standard feature in SAP to prevent data inconsistencies and ensure data integrity when multiple users are accessing the same data simultaneously.
  Cause:
  
  User Locking: The data you are trying to access or modify is currently locked by another user (indicated by &1).
  Long-Running Transactions: If a user is in a long-running transaction, they may inadvertently lock data for an extended period.
  Uncommitted Changes: If a user has made changes to the data but has not yet committed those changes, the data remains locked.
  System Issues: Occasionally, system issues or bugs can lead to improper locking behavior.
  
  Solution:
  
  Wait and Retry: If the lock is temporary, you can wait for the other user to complete their transaction and then try again.
  Identify the Locking User: Use transaction code SM12 to view the list of locks in the system. You can identify the user who is holding the lock and the object that is locked.
  Contact the User: If possible, contact the user who is holding the lock to see if they can release it or if they are still actively working on the transaction.
  Release the Lock: If the locking user is no longer active (e.g., they have logged off), a system administrator can release the lock using transaction code SM12. However, this should be done with caution to avoid data inconsistencies.
  Check for Long-Running Transactions: If you notice frequent locking issues, investigate if there are long-running transactions that can be optimized or if users are not properly completing their tasks.
  Review Workflow Settings: If this error occurs in the context of workflows, review the workflow settings and ensure that they are configured correctly to minimize locking issues.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  SM21: To check system logs for any related issues.
  SWI1: To monitor workflow instances.
  
  
  Documentation: Refer to SAP Help documentation for more details on locking mechanisms and best practices for managing locks.
  Performance Tuning: Consider performance tuning of long-running transactions to reduce the likelihood of locks.
  
  If the issue persists or if you are unsure about releasing locks, it is advisable to consult with your SAP Basis team or system administrator for further assistance.