How To Fix KI502 - System error when locking the data records

KI502 - Overview

• Message type: E = Error

• Message class: KI -

• Message number: 502

• Message text: System error when locking the data records

What causes this issue?

The lock to protect the data records being processed could not be set.
The probable reason for this is that the SAP locking table is full and
no more entries can be added.

System Response

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

How to fix this error?

Inform your system administrator immediately.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KI502 - System error when locking the data records ?

  The SAP error message KI502, which states "System error when locking the data records," typically occurs in the context of CO (Controlling) module transactions. This error indicates that there is an issue with the system's ability to lock the necessary data records for processing, which can prevent users from completing their transactions.
  Causes of KI502 Error
  
  
  Database Lock Issues: The error may arise due to problems with database locks. If a record is already locked by another user or process, the system cannot lock it for the current transaction.
  
  
  System Performance Issues: High system load or performance issues can lead to timeouts or failures in locking mechanisms.
  
  
  
  Configuration Issues: Incorrect configuration in the CO module 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 system.
  
  
  User Authorizations: Insufficient authorizations for the user trying to perform