How To Fix MC191 - Unexpected error when unlocking (matchcode object &)

MC191 - Overview

• Message type: E = Error

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

• Message number: 191

• Message text: Unexpected error when unlocking (matchcode object &)

What causes this issue?

In matchcode object maintenance, the global data of a function
module are locked. An unexpected error occurred during unlocking.

System Response

The system continues.

How to fix this error?

Continue working. A lock problem might occur, however, during futher
matchcode maintenance.

Error message extract from SAP system. Copyright SAP SE.

MC191 - Details

• The SAP error message MC191, which states "Unexpected error when unlocking (matchcode object &)," typically occurs in the context of matchcode objects in SAP. This error can arise due to various reasons, including issues with the matchcode object configuration, database inconsistencies, or problems with the underlying data.
  Causes:
  
  
  Configuration Issues: The matchcode object may not be properly configured or may have missing parameters.
  Database Locking: There could be a database lock that is preventing the unlocking process from completing.
  Inconsistent Data: There may be inconsistencies in the data that the matchcode object is trying to access.
  System Bugs: There could be bugs in the SAP system or specific patches that need to be applied.
  Authorization Issues: The user may not have the necessary authorizations to perform the unlocking operation.
  
  Solutions:
  
  Check Configuration: Review the configuration of the matchcode object in transaction codes like SE11 (Data Dictionary) or SE78 (Matchcode Object Maintenance) to ensure everything is set up correctly.
  Database