How To Fix /SCWM/EXT_SYS_LCK005 - Data record is locked with another change key (&1)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/EXT_SYS_LCK -

• Message number: 005

• Message text: Data record is locked with another change key (&1)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/EXT_SYS_LCK005 - Data record is locked with another change key (&1) ?

  The SAP error message /SCWM/EXT_SYS_LCK005 Data record is locked with another change key (&1) typically occurs in the context of the Extended Warehouse Management (EWM) module. This error indicates that a data record you are trying to access or modify is currently locked by another process or transaction, which is preventing your operation from proceeding.
  Cause:
  
  Concurrent Access: The most common cause of this error is that another user or process is currently accessing or modifying the same data record. This can happen in scenarios where multiple users are working on the same warehouse tasks or transactions simultaneously.
  Long-running Transactions: If a transaction takes a long time to complete, it may hold a lock on the data record for an extended period, leading to this error for other users trying to access the same record.
  System Configuration: Certain configurations in the EWM system may lead to more frequent locking issues, especially if the system is set up to enforce strict locking mechanisms.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for a few moments and then retry the operation. If the lock is held by a long-running transaction, it may be released shortly.
  Identify the Lock: Use transaction codes like SM12 (for lock entries) to identify which user or process is holding the lock on the data record. This can help you understand if the lock is due to another user or a background job.
  Communicate with Users: If you identify that another user is holding the lock, communicate with them to see if they can release the lock or if they are done with their transaction.
  Check for Background Jobs: Sometimes, background jobs may hold locks. Check the job status in transaction SM37 to see if any jobs are running that might be causing the lock.
  Adjust Locking Mechanisms: If this issue occurs frequently, consider reviewing the system's locking mechanisms and configurations. You may need to consult with your SAP Basis team or EWM consultants to optimize the locking strategy.
  Error Handling in Custom Code: If you are using custom code or enhancements, ensure that they handle locking scenarios appropriately, including retries or error messages to users.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review the EWM documentation for best practices regarding data access and locking mechanisms.
  Performance Monitoring: Regularly monitor system performance and transaction logs to identify patterns that may lead to locking issues.
  
  By following these steps, you should be able to resolve the locking issue and prevent it from recurring in the future.