How To Fix KO479 - Order is locked

SAP Error Message - Details

• Message type: E = Error

• Message class: KO - Master data for CO orders

• Message number: 479

• Message text: Order is locked

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 KO479 - Order is locked ?

  The SAP error message KO479, which states "Order is locked," typically occurs when a user attempts to perform an action on a production order or a process order that is currently locked by another user or process. This locking mechanism is in place to prevent data inconsistencies and ensure that only one user can make changes to an order at a time.
  Causes of KO479 Error
  
  User Lock: Another user is currently editing or processing the order.
  Background Jobs: A background job is running that is accessing the order.
  Transaction in Progress: A transaction related to the order is still in progress, preventing other actions.
  System Lock: The order may be locked due to system-level processes or configurations.
  
  Solutions to KO479 Error
  
  Wait and Retry: If the order is locked by another user, wait for them to finish their work and then try again.
  Identify the Lock:
  
  Use transaction code SM12 to check for locks on the order. You can filter by the order number to see if it is locked and by whom.
  If you find a lock that seems unnecessary, you can discuss with the user holding the lock to release it.
  
  
  Check Background Jobs: Use transaction code SM37 to check if there are any background jobs that might be locking the order. If a job is running, you may need to wait for it to complete.
  Release Locks: If you have the necessary authorizations, you can manually delete the lock entries in SM12. However, this should be done with caution and ideally after consulting with the user who holds the lock.
  System Configuration: If the issue persists, it may be necessary to check system configurations or consult with your SAP Basis team to ensure that there are no underlying issues causing excessive locking.
  
  Related Information
  
  
  Transaction Codes:
  
  SM12: Display and manage lock entries.
  SM37: Monitor background jobs.
  CO02: Change production order (where the error may occur).
  
  
  
  User Communication: If you are in a collaborative environment, communicate with your team members to ensure that everyone is aware of the order's status and to avoid unnecessary locks.
  
  
  Documentation: Refer to SAP documentation or support notes for more detailed troubleshooting steps related to order locking issues.
  
  
  If the problem persists after trying the above solutions, it may be beneficial to escalate the issue to your SAP support team for further investigation.