How To Fix MC190 - Unexpected error when locking matchcode object &

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 190

• Message text: Unexpected error when locking matchcode object &

What causes this issue?

In matchcode object maintenance, the global data of a function
module must be locked. An unexpected error occurred when locking this
function module.

System Response

The system cancels matchcode object maintenance.

How to fix this error?

Repeat matchcode object maintenance. If the same error occurs again,
repeat matchcode object maintenance after restarting the SAP system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC190 - Unexpected error when locking matchcode object & ?

  The SAP error message MC190, which states "Unexpected error when locking matchcode object &," typically occurs in the context of data processing or when accessing matchcode objects in SAP. This error can arise due to various reasons, including database inconsistencies, issues with the matchcode object itself, or problems with the underlying data.
  Causes:
  
  Database Lock Issues: The matchcode object may be locked by another process or transaction, preventing access.
  Inconsistent Data: There may be inconsistencies or corruption in the data related to the matchcode object.
  Configuration Issues: The matchcode object may not be properly configured or may have been deleted or modified incorrectly.
  System Performance: High system load or performance issues can lead to unexpected errors when accessing matchcode objects.
  Authorization Issues: The user may not have the necessary authorizations to access or lock the matchcode object.
  
  Solutions:
  
  Check Locks: Use transaction code SM12 to check for any existing locks on the matchcode object. If you find locks that are no longer needed, you can delete them.
  Consistency Check: Run a consistency check on the matchcode object using transaction code SE11 or SE16 to ensure that the data is consistent and not corrupted.
  Recreate Matchcode Object: If the matchcode object is corrupted, consider recreating it. This can be done by deleting the existing matchcode object and creating a new one.
  Review Configuration: Ensure that the matchcode object is correctly configured. Check the settings in transaction code SE11 or SE78.
  Check Authorizations: Verify that the user has the necessary authorizations to access the matchcode object. This can be done through transaction code SU53 or by checking the user roles.
  System Performance: Monitor system performance and check for any background jobs or processes that may be causing delays or locks.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (for lock entries), SE11 (for data dictionary), and SE16 (for table display).
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  System Logs: Review system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the MC190 error in your SAP system.