How To Fix /PLMU/UI_GSS033 - Synchronization unit &1 is locked and cannnot be edited

SAP Error Message - Details

• Message type: E = Error

• Message class: /PLMU/UI_GSS -

• Message number: 033

• Message text: Synchronization unit &1 is locked and cannnot be edited

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /PLMU/UI_GSS033 - Synchronization unit &1 is locked and cannnot be edited ?

  The SAP error message /PLMU/UI_GSS033 Synchronization unit &1 is locked and cannot be edited typically indicates that a synchronization unit (which could be related to a planning or configuration object) is currently locked by another user or process. This locking mechanism is in place to prevent concurrent modifications that could lead to data inconsistencies.
  Causes:
  
  Concurrent Access: Another user or process is currently editing the synchronization unit.
  Incomplete Transactions: A previous transaction that involved the synchronization unit was not completed properly, leaving it in a locked state.
  System Issues: There may be a system issue or bug that is causing the lock to persist even after the user has finished their work.
  
  Solutions:
  
  
  Check Lock Entries: Use transaction code SM12 to check for lock entries. You can look for the user who has locked the synchronization unit and see if it is still active.
  
  If you find a lock that is no longer needed, you can delete it (if you have the necessary authorizations).
  
  
  
  Wait for Release: If another user is editing the synchronization unit, you may need to wait until they finish their work and the lock is released.
  
  
  Contact the User: If you identify the user who has the lock, you can reach out to them to see if they can release it.
  
  
  System Restart: In some cases, a system restart may be necessary to clear any persistent locks, especially if they are caused by a system issue.
  
  
  Check for Background Jobs: Sometimes, background jobs may hold locks. Use transaction SM37 to check for any running jobs that might be related to the synchronization unit.
  
  
  Consult SAP Notes: If the issue persists, check the SAP Support Portal for any relevant notes or patches that might address this specific error.
  
  
  Related Information:
  
  Lock Management: Understanding how SAP handles locks can help in troubleshooting. Locks are typically managed at the database level, and SAP uses various types of locks (e.g., exclusive, shared) to ensure data integrity.
  User Authorizations: Ensure that you have the necessary authorizations to view and manage locks in the system.
  Documentation: Refer to SAP documentation for more details on synchronization units and their management within the specific module you are working with.
  
  If the problem continues after trying these solutions, it may be beneficial to involve your SAP Basis team or SAP support for further investigation.