How To Fix W4275 - Class/configuration data blocked by another user

SAP Error Message - Details

• Message type: E = Error

• Message class: W4 - Messages for material discontinuation

• Message number: 275

• Message text: Class/configuration data blocked by another user

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W4275 - Class/configuration data blocked by another user ?

  Certainly! Here's a detailed explanation of the SAP error message W4275: Class/configuration data blocked by another user:
  
  Error Message:
  W4275 - Class/configuration data blocked by another user
  
  Cause:
  This warning message occurs when a user tries to access or modify a class or configuration data in the SAP Classification system (transaction codes like CL02, CL24, CL30N, etc.), but the data is currently locked by another user. SAP uses a lock mechanism to prevent simultaneous changes to the same object, ensuring data consistency and avoiding conflicts.
  
  Another user has already locked the class or configuration data for editing.
  The lock is still active because the other user is currently working on or has not properly released the lock.
  Sometimes, locks can remain if a session was terminated abnormally or if the user forgot to save or exit properly.
  
  
  Solution:
  
  
  Check who holds the lock:
  
  Use transaction SM12 (Lock Entries) to find out which user has locked the object.
  Enter the object name or relevant details to filter the lock entries.
  Identify the user and the transaction holding the lock.
  
  
  
  Contact the user:
  
  Inform the user holding the lock to save and exit the transaction to release the lock.
  If the user is actively working, wait until they finish.
  
  
  
  Manually delete the lock (if appropriate):
  
  If the lock is stale (e.g., the user has left or the session was terminated abnormally), a system administrator can delete the lock entry in SM12.
  Caution: Deleting locks manually can cause data inconsistencies if the user is still working on the object. Only do this if you are sure the lock is stale.
  
  
  
  Avoid simultaneous editing:
  
  Coordinate with team members to avoid editing the same class/configuration data simultaneously.
  
  
  
  
  Related Information:
  
  
  Lock Mechanism in SAP:
  
  SAP uses enqueue locks to prevent concurrent changes.
  Locks are released automatically when the user saves or exits the transaction properly.
  
  
  
  Transactions involved:
  
  Classification transactions: CL02 (Change Class), CL24 (Change Characteristic), CL30N (Class Maintenance), etc.
  Lock monitoring: SM12
  
  
  
  Additional Notes:
  
  If locks frequently remain, check for network or system issues causing sessions to hang.
  Educate users on proper transaction exit procedures to avoid leftover locks.
  
  
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Class/configuration data is locked by another user to prevent simultaneous editing.
  
  
  Solution
  Check lock owner in SM12, ask user to release lock, or delete lock if stale and safe.
  
  
  Related
  SAP enqueue lock mechanism, transactions CL02, CL24, CL30N, and lock monitor SM12.
  
  
  
  
  If you need help with specific steps in SM12 or further troubleshooting, feel free to ask!