How To Fix 12191 - Batch &1 is already locked by user &2

SAP Error Message - Details

• Message type: E = Error

• Message class: 12 - Herstelldatum/Mindesthaltbarkeitsdatum/Chargen

• Message number: 191

• Message text: Batch &1 is already locked by user &2

What causes this issue?

Batch <LS>&V1&</>, which is assigned to material <LS>&V3&</>, is
currently locked and cannot be edited. The lock was set during editing
of another batch of material <LS>&V3&</> to ensure that the batches of
this material are classified consistently.
There a various classified batches for material <LS>&V3&</>, which
itself is not classified. At least one of these batches is being edited
in a parallel session, whereby the system set a lock for batch <LS>&V1&
</>. This lock should prevent different classes from being assigned to
these batches as a result of simultaneous editing of batches of
material <LS>&V3&</> in various sessions.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Finish editing all batches of material <LS>&V3&</> in parallel
sessions.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 12191 - Batch &1 is already locked by user &2 ?

  The SAP error message "12191: Batch &1 is already locked by user &2" indicates that a specific batch (identified by &1) is currently locked by another user (identified by &2). This typically occurs in scenarios where multiple users are trying to access or modify the same batch record simultaneously, leading to a conflict.
  Cause:
  
  Concurrent Access: Another user is currently processing or has locked the batch for editing, preventing other users from making changes.
  Long-running Transactions: A user may have initiated a long-running transaction that has not yet completed, keeping the batch locked.
  System Errors: Occasionally, system errors or crashes can leave a batch in a locked state even if the user is no longer actively using it.
  
  Solution:
  
  Wait and Retry: If the batch is locked by another user, the simplest solution is to wait until that user completes their transaction and releases the lock. You can periodically check if the lock has been released.
  Identify the Locking User: Use transaction codes like SM12 (Display and Delete Locks) to identify the user who has locked the batch. You can then communicate with that user to understand their activity.
  Release the Lock: If the locking user is unavailable or if the lock is due to a system error, an administrator can manually release the lock using transaction SM12. However, this should be done with caution to avoid data inconsistencies.
  Check for Long-running Jobs: If the lock persists, check for any long-running jobs or transactions that may be holding the lock. You can use transaction SM37 to monitor job statuses.
  Review Batch Processing Logic: If this error occurs frequently, it may be worth reviewing the batch processing logic to ensure that locks are being managed effectively and that users are not inadvertently locking batches for extended periods.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: Display and Delete Locks
  SM37: Monitor Job Status
  SM21: System Log
  
  
  Batch Management: Understanding how batch management works in SAP can help in preventing such locking issues. Familiarize yourself with the batch processing workflows and best practices.
  User Communication: Establishing a protocol for users to communicate when they are working on specific batches can help reduce conflicts.
  
  If the issue persists or if you encounter it frequently, it may be beneficial to consult with your SAP Basis team or system administrator for further investigation and resolution.