How To Fix /SCWM/UI_GR031 - Inbound delivery item &1 / &2 of HU &3 could not be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/UI_GR -

• Message number: 031

• Message text: Inbound delivery item &1 / &2 of HU &3 could not be locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/UI_GR031 - Inbound delivery item &1 / &2 of HU &3 could not be locked ?

  The SAP error message /SCWM/UI_GR031 indicates that an inbound delivery item could not be locked for a handling unit (HU) due to a conflict, typically because another process is currently accessing or modifying the same item. This can occur in the context of warehouse management and logistics processes where multiple users or processes may attempt to interact with the same data simultaneously.
  Cause:
  
  Concurrent Access: Another user or process is currently working on the same inbound delivery item or handling unit, preventing your transaction from locking it.
  System Locking Mechanism: SAP uses a locking mechanism to ensure data integrity. If a record is locked by another transaction, you will receive this error when trying to access it.
  Long-running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, causing other transactions to fail.
  Background Jobs: Background jobs that are processing the same data can also lead to locking issues.
  
  Solution:
  
  Wait and Retry: If the issue is due to concurrent access, waiting for a few moments and then retrying the operation may resolve the issue.
  Identify Locking Process: Use transaction code SM12 to check for existing locks on the inbound delivery item or handling unit. You can identify the user or process that is holding the lock.
  Release Locks: If you find that a lock is held unnecessarily (e.g., a user has left a session open), you may need to release the lock. However, be cautious when doing this, as it may disrupt other users.
  Optimize Processes: Review the processes that interact with inbound deliveries to ensure they are efficient and do not hold locks longer than necessary.
  Check for Background Jobs: If there are background jobs running that may be locking the data, consider scheduling them during off-peak hours or optimizing their performance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view and manage locks), SM21 (to check system logs), and ST22 (to check for dumps).
  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.
  User Training: Ensure that users are trained on how to properly manage their sessions and avoid leaving transactions open longer than necessary.
  
  If the problem persists after trying the above solutions, it may be necessary to consult with your SAP Basis team or SAP support for further assistance.