How To Fix IU557 - Lock could not be removed

SAP Error Message - Details

• Message type: E = Error

• Message class: IU - Incremental Conversion (ICNV)

• Message number: 557

• Message text: Lock could not be removed

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 IU557 - Lock could not be removed ?

  The SAP error message IU557, which states "Lock could not be removed," typically occurs when there is an issue with the lock entries in the SAP system. This error can arise in various scenarios, such as during the execution of transactions or when trying to update or delete records that are currently locked by another process.
  Causes:
  
  Concurrent Access: Another user or process is currently accessing the same data, which prevents the lock from being released.
  System Errors: There may be underlying system issues or inconsistencies that are causing the lock to persist.
  Long-Running Transactions: If a transaction takes too long to complete, it may hold onto locks longer than expected.
  Database Issues: Problems with the database, such as deadlocks or corruption, can also lead to this error.
  User Session Issues: If a user session is terminated unexpectedly, it may leave locks in place.
  
  Solutions:
  
  Identify the Lock: Use transaction codes like SM12 (Display and Delete Locks) to identify which user or process is holding the lock. You can then take appropriate action, such as contacting the user or terminating the session if necessary.
  Release the Lock: If you have the necessary authorizations, you can manually delete the lock entries in SM12. Be cautious when doing this, as it may affect other users.
  Check for Long-Running Transactions: Review the system for any long-running transactions that may be holding locks. You can use transaction SM66 (Global Work Process Overview) to monitor active processes.
  System Restart: In some cases, a system restart may be necessary to clear persistent locks, but this should be done with caution and typically during a maintenance window.
  Database Check: If the issue persists, consider running database checks or consulting with your database administrator to ensure there are no underlying issues.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: Display and Delete Locks
  SM66: Global Work Process Overview
  SM21: System Log
  ST22: Dump Analysis
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search the SAP Support Portal for relevant notes.
  User Training: Ensure that users are trained on proper transaction handling to minimize the occurrence of locks.
  
  If the problem persists after trying the above solutions, it may be necessary to escalate the issue to your SAP Basis team or SAP support for further investigation.