How To Fix /SAPAPO/DMRES233 - Resource &1 is locked by user &2, data could not be transferred

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/DMRES -

• Message number: 233

• Message text: Resource &1 is locked by user &2, data could not be transferred

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 /SAPAPO/DMRES233 - Resource &1 is locked by user &2, data could not be transferred ?

  The SAP error message /SAPAPO/DMRES233 indicates that a resource is currently locked by another user, preventing data transfer or modifications. This typically occurs in the context of Advanced Planning and Optimization (APO) when multiple users attempt to access or modify the same resource simultaneously.
  Cause:
  
  Resource Locking: The resource (e.g., a production resource, transportation resource) is locked by another user who is currently working on it. This can happen during planning activities, data uploads, or when executing transactions that require exclusive access to the resource.
  Long-running Transactions: If a user has a long-running transaction that locks the resource, other users will be unable to access it until the lock is released.
  System Configuration: Certain configurations in the system may lead to more frequent locking scenarios, especially in environments with high concurrency.
  
  Solution:
  
  Identify the Locking User: Use transaction code SM12 to check for locks in the system. You can filter by the resource name or the user ID to find out who is holding the lock.
  Communicate with the Locking User: If possible, contact the user who is holding the lock to understand their activity and see if they can release the lock or complete their transaction.
  Wait and Retry: If the locking user is performing a necessary task, it may be best to wait until they complete their work and then retry your operation.
  Release Locks (if necessary): If the locking user is no longer active or if the lock is stale, a system administrator can release the lock using transaction SM12. However, this should be done with caution to avoid data inconsistencies.
  Review System Configuration: If locking issues are frequent, consider reviewing the system configuration and user access patterns to optimize resource usage and minimize locking conflicts.
  
  Related Information:
  
  Transaction Codes: 
  
  SM12: To view and manage locks in the system.
  SM21: To check system logs for any related issues.
  ST22: To check for dumps that might indicate underlying issues.
  
  
  Documentation: Refer to SAP Help documentation for more details on resource management and locking mechanisms in APO.
  Performance Monitoring: Regularly monitor system performance and user activities to identify potential bottlenecks or locking issues.
  
  By following these steps, you should be able to resolve the /SAPAPO/DMRES233 error and ensure smoother operation within your SAP APO environment.