How To Fix GT021 - System error (enqueue processing not anticipated)

GT021 - Overview

• Message type: E = Error

• Message class: GT - Database utilities

• Message number: 021

• Message text: System error (enqueue processing not anticipated)

What causes this issue?

The editing of lock objects is not supported.

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?

The action cannot be executed for lock objects.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GT021 - System error (enqueue processing not anticipated) ?

  The SAP error message GT021, which states "System error (enqueue processing not anticipated)," typically indicates an issue related to the enqueue mechanism in SAP. This mechanism is responsible for managing locks on objects in the system to ensure data consistency during concurrent access.
  Causes:
  
  Lock Table Issues: The enqueue lock table may be full or corrupted, leading to issues when trying to acquire locks.
  System Resource Limitations: Insufficient system resources (like memory or CPU) can lead to problems with enqueue processing.
  Database Issues: Problems with the underlying database, such as connection issues or transaction log problems, can also trigger this error.
  Configuration Errors: Incorrect configuration settings in the SAP system or the database can lead to enqueue processing errors.
  Software Bugs: There may be bugs in the SAP kernel or related components that cause unexpected behavior during enqueue processing.
  
  Solutions:
  
  Check Lock Table: Use transaction code SM12 to check for locks. If the lock table is full, you