How To Fix MGV045 - Field group data locked by user &1. Version types cannot be maintained.

SAP Error Message - Details

• Message type: E = Error

• Message class: MGV - Messages for material versions

• Message number: 045

• Message text: Field group data locked by user &1. Version types cannot be maintained.

What causes this issue?

User &v1& locks the assignment of the fields or field packages to the
field groups. This data is used for the maintenance of the version
types. When this is locked the version types cannot be maintained.

System Response

The system activates the display mode.

How to fix this error?

You have two options:
Maintain the version types later.
Contact user &v1& directly. It may be possible for this user to end
their work.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MGV045 - Field group data locked by user &1. Version types cannot be maintained. ?

  The SAP error message MGV045 indicates that a field group is currently locked by a user, which prevents any changes to version types from being maintained. This typically occurs in the context of configuration or master data management within SAP, particularly in modules like Material Management (MM) or Production Planning (PP).
  Cause:
  
  User Lock: The field group is locked by another user who is currently editing or has not properly released the lock after their session.
  Session Timeout: A user may have left a session open, causing the lock to persist even after they are no longer actively working.
  System Error: Occasionally, system errors or crashes can lead to locks not being released properly.
  
  Solution:
  
  
  Identify the Locking User: 
  
  Use transaction code SM12 to view and manage locks. You can check which user is holding the lock on the field group.
  Look for the relevant entries and identify the user who has locked the data.
  
  
  
  Release the Lock:
  
  If the locking user is identified and is available, ask them to log in and release the lock.
  If the user is not available, and you have the necessary authorizations, you can manually delete the lock entry in SM12. Be cautious with this approach, as it may lead to data inconsistencies if the user was in the middle of a critical operation.
  
  
  
  Check for Background Jobs: Sometimes, background jobs may also hold locks. Check transaction SM37 to see if any jobs are running that might be causing the lock.
  
  
  Review System Logs: If the issue persists, check the system logs for any errors or warnings that might indicate why the lock is not being released.
  
  
  Consult Basis Team: If you are unable to resolve the issue, it may be necessary to involve your SAP Basis team to investigate further, especially if there are systemic issues causing locks to persist.
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM37: To check background jobs.
  SM21: To view system logs for any related errors.
  
  
  
  User Training: Ensure that users are trained on how to properly log out of sessions and release locks to prevent this issue from occurring frequently.
  
  
  System Configuration: Review system settings related to session timeouts and lock management to optimize performance and reduce the likelihood of such locks.
  
  
  By following these steps, you should be able to resolve the MGV045 error and maintain the version types as needed.