How To Fix CK145 - System error when locking material

SAP Error Message - Details

• Message type: E = Error

• Message class: CK - Product Costing Messages

• Message number: 145

• Message text: System error when locking material

What causes this issue?

A system error occurred while the material was being locked.

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?

Carry out this action at a later time.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CK145 - System error when locking material ?

  The SAP error message CK145, which indicates a "System error when locking material," typically occurs during the process of material valuation or when trying to perform certain operations on materials in the SAP system. This error can be caused by various factors, including database issues, inconsistencies in the material master data, or problems with the locking mechanism in the system.
  Causes of CK145 Error
  
  
  Database Locking Issues: The error may arise if there are issues with the database locks that prevent the system from locking the material for processing.
  
  
  Inconsistent Data: If there are inconsistencies in the material master data or related tables, it can lead to this error.
  
  
  System Performance: High system load or performance issues can sometimes lead to timeouts or failures in locking mechanisms.
  
  
  User Authorizations: Insufficient authorizations for the user trying to perform the operation can also trigger this error.
  
  
  Background Jobs: If there are background jobs that are trying to access the same material simultaneously, it can lead to locking conflicts.
  
  
  Solutions to CK145 Error
  
  
  Check System Logs: Review the system logs (transaction SM21) for any additional error messages or warnings that might provide more context about the issue.
  
  
  Database Lock Overview: Use transaction SM12 to check for any existing locks on the material. If there are stale locks, they can be deleted if they are no longer needed.
  
  
  Material Master Data Check: Verify the integrity of the material master data using transaction MM03. Check for any inconsistencies or missing data.
  
  
  User Authorizations: Ensure that the user has the necessary authorizations to perform the operation on the material.
  
  
  System Performance: Monitor system performance and check for any long-running processes that might be affecting the locking mechanism.
  
  
  Restart the Transaction: Sometimes, simply restarting the transaction or logging out and back into the system can resolve temporary issues.
  
  
  Consult Basis Team: If the issue persists, it may be necessary to involve the SAP Basis team to investigate any underlying database or system issues.
  
  
  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 relevant transaction codes such as SM12 (Lock Entries), SM21 (System Log), and MM03 (Display Material) for troubleshooting.
  
  
  SAP Support: If the issue cannot be resolved internally, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurred.
  
  
  Documentation: Review SAP documentation and community forums for additional insights and similar cases reported by other users.
  
  
  By following these steps, you should be able to diagnose and resolve the CK145 error in your SAP system.