How To Fix KF566 - Object &1 (&2) is locked by user &3

SAP Error Message - Details

• Message type: E = Error

• Message class: KF -

• Message number: 566

• Message text: Object &1 (&2) is locked by user &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message KF566 - Object &1 (&2) is locked by user &3 ?

  The SAP error message KF566 indicates that a specific object (identified by &1 and &2) is currently locked by a user (identified by &3). This typically occurs in scenarios where multiple users are trying to access or modify the same object simultaneously, leading to a lock situation to prevent data inconsistencies.
  Cause:
  
  Concurrent Access: Another user is currently editing or processing the object, which leads to a lock being placed on it.
  Long-Running Transactions: A transaction that takes a long time to complete may hold a lock for an extended period.
  Unfinished Sessions: If a user has not properly logged out or has an unfinished session, it may leave the object locked.
  System Errors: Occasionally, system errors or crashes can leave locks in place.
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for the other user to finish their work may resolve the issue. You can retry accessing the object after some time.
  Identify the Locking User: Use transaction code SM12 to view the list of locks in the system. You can check which user is holding the lock and the object that is locked.
  Contact the Locking User: If possible, communicate with the user who is holding the lock to see if they can release it.
  Release the Lock: If the locking user is unavailable or if the lock is no longer valid (e.g., due to a session crash), an administrator can manually release the lock using transaction code SM12. However, this should be done with caution to avoid data inconsistencies.
  Check for Long-Running Transactions: If the lock is due to a long-running transaction, investigate the transaction to see if it can be optimized or if it needs to be terminated.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  SM21: To check system logs for any errors that might have caused the lock.
  ST22: To check for dumps that might indicate issues with the application.
  
  
  Lock Management: Understanding how SAP handles locks can help in troubleshooting. SAP uses a locking mechanism to ensure data integrity, and locks can be either exclusive or shared.
  User Training: Educating users on proper session management and how to log out of transactions can help reduce the occurrence of locks.
  
  If the issue persists or if you are unsure about releasing locks, it is advisable to consult with your SAP Basis team or system administrator for further assistance.