How To Fix KV029 - System error when locking the data records

SAP Error Message - Details

• Message type: E = Error

• Message class: KV - Variance Analysis for Cost Centers and Cost Objects

• Message number: 029

• Message text: System error when locking the data records

What causes this issue?

There are two possible causes:
Not enough <ZK>shared memory</> was reserved for the lock table in the
<ZK>profile parameter</> <LS>enqueue/table_size</>.
Lock management for the application is faulty. The lock entries were
not deleted.

How to fix this error?

<ZH>Lock table too small</>
Increase the value for the lock table with the profile parameter
<LS>enqueue/table_size</>.
If this parameter is not specified, the system uses the standard
setting of 4096 (KB).
Note:
You need approximately:
250 bytes per line entry
500 KB for 2000 lines
Increasing the table size has no effect if the application generates
too many data records.

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

<ZH>Faulty lock management</>
Check whether the lock table contains data records to be deleted under
Tools -> Administration -> Monitor -> Lock Entries.
Contact 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 KV029 - System error when locking the data records ?

  The SAP error message KV029, which states "System error when locking the data records," typically indicates that there is an issue with the system's ability to lock the necessary data records for processing. This can occur in various scenarios, such as during data entry, report generation, or when executing certain transactions.
  Causes:
  
  Database Lock Issues: The error may arise if there are issues with database locks, such as deadlocks or contention for the same records 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 settings in the SAP system or database can lead to locking problems.
  Transport Issues: If there are ongoing transports or changes being made to the system, it may affect the ability to lock records.
  User Authorizations: Insufficient authorizations for the user trying to perform the action may also lead to locking issues.
  
  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).
  System Performance Monitoring: Monitor system performance using transaction codes like SM50 or SM66 to identify any processes that may be causing contention.
  Review Configuration: Ensure that the system and database configurations are correct and optimized for performance.
  User Authorizations: Verify that the user has the necessary authorizations to perform the action that is causing the error.
  Restart the Transaction: Sometimes, simply restarting the transaction or logging out and back into the system can resolve temporary issues.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches or updates.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (Lock Entries), SM50 (Work Process Overview), and SM66 (Global Work Process Overview) for monitoring and troubleshooting.
  SAP Support: If the issue persists, consider reaching out to SAP Support for further assistance, especially if it appears to be a bug or requires deeper investigation.
  Documentation: Review SAP documentation and community forums for additional insights and similar cases.
  
  By following these steps, you should be able to diagnose and potentially resolve the KV029 error in your SAP system.