How To Fix CK378 - Material master in plant & could not be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: CK - Product Costing Messages

• Message number: 378

• Message text: Material master in plant & could not be locked

What causes this issue?

At least one material master record in plant &V1& is locked by another
user.

System Response

The material master record in plant &V1& could not be locked for
costing.

How to fix this error?

Run the program 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 CK378 - Material master in plant & could not be locked ?

  The SAP error message CK378 typically indicates that there is an issue with the material master data in a specific plant, and it cannot be locked for processing. This can occur during various transactions, such as when trying to create or change material master records.
  Cause:
  
  Concurrent Access: The most common cause of this error is that another user or process is currently accessing the material master data, preventing your transaction from locking it.
  Database Lock: There may be a database lock on the material master record due to a previous transaction that has not yet been completed or has failed.
  Authorization Issues: The user may not have the necessary authorizations to lock the material master data.
  System Performance Issues: High system load or performance issues can also lead to locking problems.
  
  Solution:
  
  Check for Active Sessions: Use transaction code SM12 to check for any active locks on the material master record. If you find any locks that are no longer needed, you can delete them (if you have the necessary authorizations).
  Wait and Retry: If another user is currently working on the material master, you may need to wait until they complete their transaction and then try again.
  Check Authorizations: Ensure that you have the necessary authorizations to access and lock the material master data. You may need to contact your SAP security team if you suspect authorization issues.
  System Monitoring: If the issue persists, check for any system performance issues or errors in the system logs (transaction SM21) that might be affecting the locking mechanism.
  Consult SAP Notes: Look for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  SM21: To check system logs for errors.
  SE11: To view the data dictionary and check the structure of the material master table.
  
  
  Material Master Tables: The material master data is typically stored in tables like MARA (General Material Data), MAST (Material to BOM Link), and MARC (Plant Data for Material).
  SAP Support: If the issue cannot be resolved through the above steps, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to identify the cause of the CK378 error and take appropriate action to resolve it.