How To Fix /SAPSLL/PLUGINR3451 - Material &1 is locked and can't be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPSLL/PLUGINR3 -

• Message number: 451

• Message text: Material &1 is locked and can't be changed

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPSLL/PLUGINR3451 - Material &1 is locked and can't be changed ?

  The SAP error message /SAPSLL/PLUGINR3451 Material &1 is locked and can't be changed typically indicates that the material specified (represented by &1) is currently locked in the system, preventing any changes from being made to it. This locking mechanism is often in place to ensure data integrity during processes such as updates, transfers, or other operations that might affect the material's status.
  Causes:
  
  Active Transactions: The material may be involved in an active transaction, such as a purchase order, sales order, or inventory movement.
  User Lock: A user may have locked the material for editing, which can happen if they are currently working on it or if a previous session did not release the lock properly.
  Background Jobs: A background job might be processing data related to the material, causing it to be locked temporarily.
  Data Consistency Checks: The system may have locked the material as part of a data consistency check or during a batch job.
  
  Solutions:
  
  Check Active Transactions: Verify if there are any active transactions involving the material. You can do this by checking related documents (e.g., purchase orders, sales orders) to see if they are still open.
  Release Locks: If you have the necessary authorizations, you can check and release locks using transaction code SM12. Look for the material number and release the lock if it is safe to do so.
  Wait for Background Jobs: If the material is locked due to a background job, you may need to wait for the job to complete. You can check the status of background jobs using transaction code SM37.
  Contact the User: If a specific user has locked the material, you may need to contact them to see if they can release the lock.
  System Administrator: If you are unable to resolve the issue, it may be necessary to involve a system administrator or SAP support to investigate further.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  SM37: To monitor background jobs.
  MM03: To view material master data.
  
  
  User Authorizations: Ensure that you have the necessary authorizations to view and manage locks.
  Documentation: Refer to SAP documentation or help resources for more detailed information on material management and locking mechanisms.
  
  By following these steps, you should be able to identify the cause of the lock and take appropriate action to resolve the issue.