How To Fix TN509 - You cannot reset the queue from import phase '&1'

TN509 - Overview

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 509

• Message text: You cannot reset the queue from import phase '&1'

What causes this issue?

The queue has been processed up to import phase '&V1&'. This means that
objects or system information have already been imported into your
system.
You cannot reverse this import or correct any errors by resetting the
queue status. If you reimport this queue or a modified queue you risk
causing more errors and inconsistencies that can render your system
unusable.

System Response

The status of the queue is not reset.

How to fix this error?

Correct any errors and continue importing the queue from phase '&V1&'.
If you need help with any errors, contact SAP Support.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TN509 - You cannot reset the queue from import phase '&1' ?

  The SAP error message TN509, which states "You cannot reset the queue from import phase '&1'," typically occurs in the context of transport management within SAP systems. This error indicates that there is an issue with the transport queue during the import process, and it cannot be reset due to the current phase of the import.
  
  Cause:
  
  Import Phase: The error occurs when you attempt to reset a transport request that is currently in an import phase that does not allow for resetting. For example, if the transport is in the "Importing" phase, it cannot be reset.
  Queue Status: The transport queue may be locked or in a state that does not permit resetting.
  Transport Management System (TMS) Issues: There may be underlying issues with the TMS configuration or the transport directory.
  
  
  Solution:
  
  Check Import Status: Verify the current status of the transport request in the transport queue. You can do this using transaction code STMS