How To Fix WRF_REF174 - Material attributes to reference determ. schema &4 is locked by user &3

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_REF - Messages from References for Materials Without History

• Message number: 174

• Message text: Material attributes to reference determ. schema &4 is locked by user &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_REF174 - Material attributes to reference determ. schema &4 is locked by user &3 ?

  The SAP error message WRF_REF174 indicates that a material attributes reference determination schema is locked by a specific user. This typically occurs in the context of material master data management, particularly when multiple users are trying to access or modify the same data simultaneously.
  Cause:
  
  User Lock: The schema 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 their session open, causing the lock to persist even if they are no longer actively working on it.
  System Error: Occasionally, system errors or crashes can lead to locks that are not released properly.
  
  Solution:
  
  Identify the User: Check which user is holding the lock. You can do this by using transaction code SM12 to view the lock entries. Look for the user ID mentioned in the error message.
  Contact the User: If possible, contact the user who has the lock and ask them to release it. They can do this by either completing their task or logging out of the session.
  Release the Lock: If the user is unavailable or the session is no longer active, you can manually release the lock using transaction code SM12. Be cautious when doing this, as it may lead to data inconsistencies if the user was in the middle of a transaction.
  Check for Background Jobs: Sometimes, background jobs may hold locks. Check if there are any running jobs that might be causing the lock.
  Review System Logs: If the issue persists, review system logs for any errors or warnings that might indicate underlying issues with the database or application.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for errors.
  SE11: To view the database table structure if needed.
  
  
  User Management: Ensure that users are trained on how to properly log out of sessions and release locks.
  Performance Monitoring: Regularly monitor system performance and user sessions to prevent excessive locking issues.
  
  If the problem continues to occur frequently, it may be worth investigating the overall user access and session management practices within your organization to minimize conflicts.