How To Fix /PLMB/OSET009 - Object set &1 is in use by another user

/PLMB/OSET009 - Overview

• Message type: E = Error

• Message class: /PLMB/OSET -

• Message number: 009

• Message text: Object set &1 is in use by another 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.

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 /PLMB/OSET009 - Object set &1 is in use by another user ?

  The SAP error message /PLMB/OSET009 Object set &1 is in use by another user typically occurs when a user attempts to modify or delete an object set that is currently being accessed or modified by another user. This is a common concurrency control mechanism in SAP to prevent data inconsistencies.
  
  Cause:
  
  Concurrent Access: Another user is currently using the object set, which locks it for modifications.
  Session Lock: The object set may be locked due to an open session or transaction that has not been completed or released.
  Long-running Transactions: If a transaction is taking a long time to complete, it may hold the lock on the object set longer than expected.
  
  
  Solution:
  
  Wait and Retry: If possible, wait for the other user to finish their work with the object set and then try again.
  Identify the Lock: Use transaction codes like SM12 (to view locks) or SM21 (to check system logs) to identify which user or