How To Fix MW090 - Allocation rule &1 is being processed by user &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 090

• Message text: Allocation rule &1 is being processed by user &2

What causes this issue?

Allocation rule &V1& is currently being processed by user &V2&. To
avoid inconsistencies, no more than one person is allowed to work on an
allocation rule at the one time.

System Response

INCLUDE ISR_VERARBEITUNG

How to fix this error?

Try again later.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW090 - Allocation rule &1 is being processed by user &2 ?

  The SAP error message MW090, which states "Allocation rule &1 is being processed by user &2," typically occurs in the context of inventory management or allocation processes. This message indicates that a specific allocation rule (identified by &1) is currently being accessed or processed by another user (identified by &2), which prevents your transaction from proceeding.
  Cause:
  
  Concurrent Access: The most common cause of this error is that another user is currently working on the same allocation rule. SAP locks certain objects to prevent data inconsistencies, and this message indicates that the allocation rule is locked by another session.
  Long-running Transactions: If the other user is taking a long time to complete their transaction, it can lead to this error being displayed for others trying to access the same allocation rule.
  System Configuration: In some cases, system settings or configurations may lead to unexpected locking behavior.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the other user to complete their transaction. Once they finish, the lock will be released, and you can try your transaction again.
  Identify the User: If you have the necessary permissions, you can use transaction codes like SM12 (to view and manage locks) to identify the user who is holding the lock. You can then communicate with them to understand their progress.
  Check for Long-running Processes: If the other user is taking an unusually long time, you may want to check if they are stuck or if there is an issue with their transaction.
  System Administrator Intervention: If the lock persists and you cannot identify the user or if the user is no longer active, a system administrator may need to intervene. They can release the lock if it is safe to do so.
  Review Configuration: If this issue occurs frequently, it may be worth reviewing the configuration of your allocation processes to ensure that they are optimized for concurrent access.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like 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 this error message. SAP frequently updates its knowledge base with solutions for common problems.
  User Training: Ensure that users are trained on how to properly manage allocation rules and understand the implications of long-running transactions.
  
  By following these steps, you should be able to resolve the MW090 error and continue with your allocation processes in SAP.