How To Fix WM249 - Function blocked, already started by user &

SAP Error Message - Details

• Message type: E = Error

• Message class: WM - IS-R Assortments

• Message number: 249

• Message text: Function blocked, already started by user &

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WM249 - Function blocked, already started by user & ?

  The SAP error message WM249 ("Function blocked, already started by user") typically occurs in the Warehouse Management (WM) module when a user attempts to perform an action that is already in progress by the same user. This is a safety feature in SAP to prevent data inconsistencies and conflicts that can arise from multiple processes being executed simultaneously by the same user.
  Cause:
  
  Concurrent Process: The user is trying to execute a transaction or function that is already being processed in the background. For example, if a user has initiated a transfer order and tries to start another transfer order before the first one is completed.
  Session Management: The user may have multiple sessions open, and the action is being processed in one of those sessions.
  Lock Mechanism: SAP uses a locking mechanism to ensure data integrity. If a user has locked a particular function or transaction, other attempts to access that function will be blocked until the lock is released.
  
  Solution:
  
  Check Active Sessions: Verify if there are any active sessions where the function is already being executed. You can do this by checking the transaction codes in the SAP GUI.
  Complete the Current Process: If you find that a process is already running, wait for it to complete before attempting to start a new one.
  Log Off and Log Back In: Sometimes, simply logging off and logging back into the SAP system can clear any session-related issues.
  Use Transaction SM12: If you suspect that a lock is causing the issue, you can check for locks using transaction code SM12. You can view and delete locks if necessary, but be cautious as this can lead to data inconsistencies if not handled properly.
  Contact Support: If the issue persists, it may be necessary to contact your SAP support team or system administrator for further investigation.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  SM12: To view and manage locks.
  SM21: To check system logs for any related errors.
  SM37: To monitor background jobs that may be running.
  
  
  User Authorizations: Ensure that the user has the necessary authorizations to perform the actions they are attempting.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to resolve the WM249 error and continue with your warehouse management tasks.