How To Fix ET021 - User & already working on & of &

SAP Error Message - Details

• Message type: E = Error

• Message class: ET - Translation and maintenance language

• Message number: 021

• Message text: User & already working on & of &

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 ET021 - User & already working on & of & ?

  The SAP error message ET021 typically indicates that a user is already working on a particular object or transaction, which prevents another user from accessing it simultaneously. This is a common issue in SAP systems where multiple users may attempt to access the same data or transaction at the same time.
  Cause:
  
  Locking Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. When a user opens a transaction or object, it is locked for editing by other users until the first user completes their task or explicitly releases the lock.
  Long-running Transactions: If a user has a transaction open for an extended period, it can lead to this error for others trying to access the same transaction.
  Session Management: Sometimes, a user may have multiple sessions open, and one of them is already working on the object in question.
  
  Solution:
  
  Wait and Retry: If the user can wait, they should try to access the transaction again after a few moments.
  Check Active Sessions: The user can check their active sessions in SAP (using transaction code SM04 or AL08) to see if they have an open session that is causing the lock.
  Release Locks: If the user has an open session that they no longer need, they can log out or close that session to release the lock.
  Contact Administrator: If the issue persists, it may be necessary to contact the SAP system administrator to investigate further. They can check the lock entries using transaction code SM12 and release any unnecessary locks.
  Review User Permissions: Ensure that the user has the appropriate permissions to access the transaction or object in question.
  
  Related Information:
  
  Transaction Codes:
  
  SM04: To view user sessions.
  AL08: To view all active users in the system.
  SM12: To view and manage lock entries.
  
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message.
  Documentation: Review SAP documentation for best practices on session management and locking mechanisms.
  
  By following these steps, users can typically resolve the ET021 error and continue their work in the SAP system.