How To Fix /SAPAPO/DP_EVENT110 - Lock object &2 is locked by user &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/DP_EVENT -

• Message number: 110

• Message text: Lock object &2 is locked by user &1

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/DP_EVENT110 - Lock object &2 is locked by user &1 ?

  The SAP error message /SAPAPO/DP_EVENT110 Lock object &2 is locked by user &1 typically occurs in the context of SAP Advanced Planning and Optimization (APO), particularly in the Demand Planning (DP) module. This error indicates that a specific lock object (in this case, identified by &2) is currently locked by another user (identified by &1), preventing the current user from accessing or modifying the data associated with that lock.
  Cause:
  
  Concurrent Access: The most common cause of this error is that two or more users are trying to access or modify the same data simultaneously. SAP uses lock objects to prevent data inconsistencies that can arise from concurrent updates.
  Long-Running Transactions: If a user has a long-running transaction that holds the lock, other users will be unable to access the locked object until the transaction is completed.
  Unfinished Sessions: Sometimes, a user may have left a session open without completing their work, which can lead to locks remaining in place longer than necessary.
  
  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 try your action again.
  Identify the Lock: Use transaction code SM12 to view and manage lock entries. You can check which user is holding the lock and the object that is locked.
  Contact the User: If you identify the user holding the lock, you can contact them to see if they can complete their transaction or release the lock.
  Delete Lock Entries: If necessary and if you have the appropriate authorizations, you can delete the lock entry in SM12. However, this should be done with caution, as it may lead to data inconsistencies if the other user is still working on the data.
  Review System Performance: If locks are a frequent issue, it may be worth reviewing system performance and user transaction patterns to identify any underlying issues that could be optimized.
  
  Related Information:
  
  Lock Management: Understanding how SAP handles locks can help in troubleshooting. Locks are typically managed at the database level, and SAP provides various tools to monitor and manage them.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related issues.
  ST22: To check for dumps that might indicate underlying problems.
  
  
  User Training: Ensure that users are trained on how to properly complete their transactions to minimize the chances of leaving locks in place.
  
  By following these steps, you should be able to resolve the lock issue and continue your work in SAP APO.