How To Fix M3587 - The planning material & is locked by the user &

M3587 - Overview

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 587

• Message text: The planning material & is locked by the user &

What causes this issue?

The planning material &V1& is being processed by user &V2& and is
therefore locked.

System Response

The planning material must be locked during single-level planning
checks to prevent another user from assigning a planning material to
this material at the same time.

How to fix this error?

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.

M3587 - Details

• The SAP error message M3587 indicates that a planning material is currently locked by a user, which prevents other users from making changes to that material. This typically occurs in the context of materials planning, where multiple users may be trying to access or modify the same material data simultaneously.
  
  Cause:
  
  User Lock: The material is locked by a user who is currently editing or processing data related to that material.
  Session Timeout: Sometimes, a user may have left a session open, causing the lock to persist even after they have finished their work.
  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 the list of locks in the system. You can filter by the material number or user ID to find out who is holding the lock.
  
  
  
  Contact the User: 
  
  If you identify the user who has locked the