How To Fix UKM098 - Update of existing keys requires exclusive locks

SAP Error Message - Details

• Message type: E = Error

• Message class: UKM - UKM Message Class

• Message number: 098

• Message text: Update of existing keys requires exclusive locks

What causes this issue?

The update was started with the option to not use exclusive locks
selected. This scenario requires that only independent data that has not
yet been persisted is processed. In particular, passed keys must not
already exist in the database.

System Response

The update in context &V2& was not performed, since &V1& passed key(s)
were found in the database.

How to fix this error?

The calling component must ensure that there is no overlapping data in
the database, or call the update process with exclusive locks.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UKM098 - Update of existing keys requires exclusive locks ?

  The SAP error message UKM098 indicates that there is an issue with updating existing keys in the system due to a lack of exclusive locks. This typically occurs in the context of the SAP Credit Management module, where the system is trying to update key data but cannot do so because another process is holding a lock on the data.
  Cause:
  
  Concurrent Access: The most common cause of this error is that multiple users or processes are trying to access and update the same data simultaneously. This can lead to a situation where one process has a lock on the data, preventing others from making changes.
  Long-running Transactions: If a transaction takes too long to complete, it can hold locks longer than necessary, causing other transactions to fail with this error.
  Lock Table Issues: Sometimes, the lock table may be full or not functioning correctly, leading to issues with acquiring locks.
  
  Solution:
  
  
  Identify and Terminate Blocking Processes:
  
  Use transaction codes like SM12 (to view and manage locks) to identify which user or process is holding the lock.
  If necessary, you can terminate the blocking process, but be cautious as this may lead to data inconsistencies.
  
  
  
  Retry the Operation:
  
  After resolving any blocking issues, retry the operation that caused the error.
  
  
  
  Optimize Long-running Transactions:
  
  Review and optimize any long-running transactions that may be holding locks for extended periods. This can involve improving performance or breaking down large transactions into smaller ones.
  
  
  
  Check Lock Table:
  
  Use transaction SM21 to check the system log for any lock table issues or errors.
  If the lock table is full, consider increasing its size in the system configuration.
  
  
  
  System Configuration:
  
  Consult with your SAP Basis team to ensure that the system is configured correctly for handling locks and that there are no underlying issues with the database or application server.
  
  
  
  SAP Notes:
  
  Check for any relevant SAP Notes that may address this specific error or provide additional guidance. You can search for notes related to UKM098 in the SAP Support Portal.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (lock entries), SM21 (system log), and SM37 (job monitoring) to help diagnose and resolve issues.
  SAP Documentation: Review the official SAP documentation for Credit Management and locking mechanisms to understand how locks are managed in the system.
  Performance Monitoring: Regularly monitor system performance and lock situations to prevent future occurrences of this error.
  
  By following these steps, you should be able to resolve the UKM098 error and ensure smoother operation within your SAP environment.