How To Fix CP189 - System error when locking type & group &

SAP Error Message - Details

• Message type: E = Error

• Message class: CP - Task list messages: Core data

• Message number: 189

• Message text: System error when locking type & group &

What causes this issue?

You want to reorganize objects in a task list with type &V1& and
group &V2&. A system error occurred during locking of group &V2&.

How to fix this error?

Notify your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CP189 - System error when locking type & group & ?

  The SAP error message CP189, which indicates a "System error when locking type & group &," typically arises in the context of the SAP Controlling (CO) module, particularly when dealing with cost center accounting, internal orders, or other controlling-related activities. This error usually points to issues with the locking mechanism in SAP, which is used to prevent data inconsistencies during concurrent processing.
  Causes:
  
  Database Lock Issues: The error may occur if there are issues with database locks, such as a lock not being released properly or contention for the same resource by multiple users or processes.
  System Performance: High system load or performance issues can lead to timeouts or failures in acquiring locks.
  Configuration Issues: Incorrect configuration in the controlling area or related settings may lead to locking problems.
  Transport Issues: If there are recent transports that have not been properly executed or have errors, they may cause inconsistencies in the locking mechanism.
  User Authorizations: Lack of proper authorizations for the user trying to perform the action may also lead to this error.
  
  Solutions:
  
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. If there are stale locks, you may need to delete them (ensure you have the necessary authorizations to do this).
  System Performance Monitoring: Monitor system performance using transaction codes like SM50 or SM66 to identify any processes that may be causing contention or delays.
  Review Configuration: Check the configuration settings in the controlling area and ensure they are set up correctly. This includes verifying cost center settings, internal order settings, etc.
  Transport Management: If the issue arose after a transport, check the transport logs for errors and ensure that all necessary objects were transported correctly.
  User Authorizations: Verify that the user has the necessary authorizations to perform the action that triggered the error.
  Restart the Application: Sometimes, simply restarting the application or the SAP instance can resolve temporary locking issues.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. You can search for "CP189" in the SAP Support Portal.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  System Logs: Review system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.