How To Fix MC166 - Matchcode ID &-& locked - try again later

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 166

• Message text: Matchcode ID &-& locked - try again later

What causes this issue?

The matchcode object which you selected for maintenance is already
being maintained by you or by another user.

System Response

Maintenance is cancelled.

How to fix this error?

After termination of the matchcode object maintenance you can request
further maintenance. Make sure that cancellation of the matchcode
record construction must first be ended with a restart before further
maintenance can be requested. Of course the cause of the cancellation
must be corrected before the restart.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC166 - Matchcode ID &-& locked - try again later ?

  The SAP error message MC166 "Matchcode ID &-& locked - try again later" typically occurs when a matchcode ID (which is used for searching and retrieving data in SAP) is locked for some reason. This can happen due to various reasons, such as:
  Causes:
  
  Concurrent Access: Another user or process is currently using or modifying the matchcode ID, leading to a temporary lock.
  System Lock: The matchcode ID might be locked due to a system process or a background job that is currently running.
  Database Lock: There may be a database-level lock on the matchcode ID, preventing access.
  Configuration Issues: There could be issues with the configuration of the matchcode ID itself.
  
  Solutions:
  
  Wait and Retry: Since the error indicates that the matchcode ID is locked, the simplest solution is to wait for a few moments and then try again. Locks are usually temporary.
  Check for Active Sessions: Use transaction codes like SM12 (to check for locks) or SM21 (to check system logs) to see if there are any active sessions that are holding the lock on the matchcode ID.
  Release Locks: If you identify a session that is holding the lock and it is safe to do so, you can release the lock using transaction SM12. Be cautious with this approach, as it may affect other users.
  Check Background Jobs: Use transaction SM37 to check if there are any background jobs that might be using the matchcode ID. If a job is running, you may need to wait for it to complete.
  Consult with Basis Team: If the issue persists, it may be necessary to consult with your SAP Basis team or system administrator to investigate further. They can check for any underlying issues with the database or system configuration.
  
  Related Information:
  
  Matchcode IDs: These are used in SAP to facilitate searches for data records. They can be defined for various objects in the system.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE16 (Data Browser), and SE78 (SAP ArchiveLink) for further investigation.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  If the problem continues after trying the above solutions, it may be necessary to escalate the issue to SAP support for further assistance.