How To Fix MC686 - ENQUEUE functions could not be deleted

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 686

• Message text: ENQUEUE functions could not be deleted

What causes this issue?

Function modules ENQUEUE_... and DEQUEUE_... are newly generated when a
lock object is activated.
An error occurred when deleting the old version.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

In order to find out why the function modules could not be deleted, you
should try to delete the function modules manually as user DDIC.
Caution: Function modules of function group SENQ should never be
manipulated manually. A syntax error in this function group makes most
of the base functions unusable (including the Editor) !

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC686 - ENQUEUE functions could not be deleted ?

  The SAP error message MC686 ("ENQUEUE functions could not be deleted") typically occurs in the context of the Material Management (MM) module, particularly when dealing with the enqueue and dequeue functions that manage locks on objects in the SAP system. This error can arise due to various reasons, including issues with the database, inconsistencies in the lock table, or problems with the enqueue server.
  Causes:
  
  Lock Table Issues: The lock table may be full or corrupted, preventing the deletion of enqueue functions.
  Database Issues: There may be underlying database issues that are causing the enqueue functions to not be deleted properly.
  System Configuration: Incorrect configuration of the enqueue server or related parameters can lead to this error.
  User Authorizations: The user may not have the necessary authorizations to delete the enqueue functions.
  System Load: High system load or performance issues can also lead to problems with enqueue and dequeue operations.
  
  Solutions:
  
  Check Lock Table: Use transaction code SM12