How To Fix /IWFND/CM_DM054 - User '&1' already locked by '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_DM -

• Message number: 054

• Message text: User '&1' already locked by '&2'

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_DM054 - User '&1' already locked by '&2' ?

  The SAP error message /IWFND/CM_DM054 User '&1' already locked by '&2' typically occurs in the context of the SAP Gateway or OData services when a user tries to perform an action that requires a lock on a resource that is already locked by another user. This can happen in scenarios where multiple users are trying to access or modify the same data simultaneously.
  Cause:
  
  Concurrent Access: The primary cause of this error is that the user (represented by &1) is trying to access a resource that is already locked by another user (represented by &2). This is a common issue in systems where multiple users are working on the same data or transaction.
  Long-Running Transactions: If a transaction takes a long time to complete, it may hold a lock on the resource for an extended period, preventing other users from accessing it.
  Session Management: Sometimes, if a user has multiple sessions open, it can lead to locking issues if the same resource is accessed across those sessions.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the other user to complete their transaction and release the lock. After some time, you can retry the operation.
  Identify the Locking User: If you have access to the system, you can identify the user who is holding the lock (the user represented by &2). You can check transaction codes like SM12 (for lock entries) to see which user is holding the lock and what resource is locked.
  Release the Lock: If necessary and if you have the appropriate permissions, you can manually release the lock using transaction SM12. However, this should be done with caution, as it may lead to data inconsistencies if the other user is in the middle of a critical operation.
  Optimize Transactions: If this error occurs frequently, consider reviewing the transactions that are causing the locks. Optimizing the performance of these transactions can help reduce the time locks are held.
  Session Management: Encourage users to manage their sessions effectively and avoid opening multiple sessions for the same transaction.
  
  Related Information:
  
  Lock Management: Understanding how SAP handles locks is crucial. SAP uses a locking mechanism to ensure data integrity during concurrent access.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view and manage lock entries), SM21 (to view system logs), and ST22 (to check for dumps).
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to locking in your version of SAP.
  
  If the problem persists or if you need further assistance, consider reaching out to your SAP Basis team or SAP support for more in-depth troubleshooting.