How To Fix MC189 - Maintenance of matchcode object & locked (try again)

MC189 - Overview

• Message type: E = Error

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

• Message number: 189

• Message text: Maintenance of matchcode object & locked (try again)

What causes this issue?

During matchcode object maintenance, the global data of a function
module must be locked when generating function modules in order to
update the global data correctly. The matchcode maintenance is
cancelled because a user is already accessing the global data of the
function module.

System Response

The system cancels maintenance of the matchcode object.

How to fix this error?

Repeat matchcode object maintenance.

Error message extract from SAP system. Copyright SAP SE.

MC189 - Details

• The SAP error message MC189, which states "Maintenance of matchcode object & locked (try again)," typically occurs when a user attempts to access or modify a matchcode object that is currently locked by another user or process. Matchcode objects are used in SAP to facilitate searches for data in various tables.
  
  Cause:
  
  Lock by Another User: Another user is currently editing or maintaining the matchcode object.
  System Lock: The system may have a temporary lock due to a previous session that did not close properly.
  Background Jobs: A background job may be running that is using the matchcode object, preventing access.
  Transaction Errors: An error in a previous transaction may have left the matchcode object in a locked state.
  
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for a few moments and then try again. If the lock is temporary, it may be released shortly.
  Check Lock Entries: Use transaction code SM12 to check for lock