How To Fix 5A666 - & & & already locked by your own transaction

SAP Error Message - Details

• Message type: E = Error

• Message class: 5A - Basis Personnel Management

• Message number: 666

• Message text: & & & already locked by your own transaction

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 5A666 - & & & already locked by your own transaction ?

  The SAP error message "5A666: & & & already locked by your own transaction" typically indicates that a resource (such as a record or object) you are trying to access is already locked by a transaction that you initiated. This can happen in various scenarios, such as when you are trying to edit a record that you have already opened in another session or transaction.
  Cause:
  
  Multiple Sessions: You may have opened the same transaction in multiple sessions and are trying to perform an action that requires exclusive access to a record.
  Uncommitted Changes: If you have made changes in a transaction and have not yet committed or saved those changes, the system will lock the record until the transaction is completed.
  Long-running Transactions: If a transaction takes a long time to process, it may hold locks on records longer than expected, preventing other transactions from accessing them.
  
  Solution:
  
  Check Open Sessions: Review your open SAP sessions and see if you have the same transaction open elsewhere. If so, either complete or close that transaction.
  Commit or Rollback: If you have pending changes in a transaction, either commit those changes or roll back the transaction to release the lock.
  Wait and Retry: If the lock is due to a long-running transaction, you may need to wait for it to complete before trying again.
  Use Transaction SM12: You can use transaction code SM12 to view and manage locks. This transaction allows you to see which locks are currently held and by which user. If necessary, you can delete your own locks, but be cautious as this may lead to data inconsistency if not handled properly.
  Check for Background Jobs: Sometimes, background jobs may also hold locks. Check if any background jobs are running that might be causing the lock.
  
  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 dumps).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Training: Ensure that users are trained on how to manage transactions effectively to avoid locking issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or support for further investigation.