How To Fix WM750 - Material &1 locked by assortment functions being performed by user &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WM - IS-R Assortments

• Message number: 750

• Message text: Material &1 locked by assortment functions being performed by user &2

What causes this issue?

One or more of the materials you wish to use in this function are
currently blocked by other functions.
Example:
You wish to edit an assortment module, but the materials it contains
are either blocked in material master maintenance or are also contained
in another module that is currently being edited.

System Response

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

How to fix this error?

Repeat the function later or cancel it.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WM750 - Material &1 locked by assortment functions being performed by user &2 ?

  The SAP error message WM750 indicates that a material is locked due to assortment functions being performed by another user. This typically occurs in the context of warehouse management (WM) or inventory management when one user is executing operations that affect the material, preventing other users from making changes or performing certain actions on that material.
  Cause:
  
  Concurrent Access: Another user is currently performing assortment functions (like creating, changing, or deleting assortments) on the same material.
  Lock Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. When a user is working on a material, it gets locked for other users until the operation is completed.
  Long-Running Transactions: If the transaction being performed takes a long time, it can lead to prolonged locking of the material.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the other user to complete their transaction. Once the lock is released, you can proceed with your operations.
  Identify the Locking User: If you need to know who is locking the material, you can use transaction code SM12 to view the lock entries. This will show you which user is currently holding the lock on the material.
  Communicate with the User: If possible, communicate with the user who is performing the assortment functions to understand when they will complete their task.
  Check for Long Transactions: If the locking is prolonged, check if the user is stuck in a transaction. They may need to complete or cancel their operation.
  System Administration: If the issue persists and is affecting multiple users, it may require intervention from a system administrator to investigate and resolve any underlying issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view locks), SM21 (to check system logs), and ST22 (to check dumps) for troubleshooting.
  SAP Notes: Check SAP Notes for any known issues or patches related to assortment functions and locking mechanisms.
  User Training: Ensure that users are trained on how to properly manage assortment functions to minimize locking issues.
  Performance Monitoring: Monitor the performance of assortment functions to identify any bottlenecks that may lead to prolonged locks.
  
  By following these steps, you should be able to address the WM750 error and understand the context in which it occurs.