How To Fix TN166 - &1 &2 was imported without using Support Package Manager

TN166 - Overview

• Message type: E = Error

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

• Message number: 166

• Message text: &1 &2 was imported without using Support Package Manager

Self-Explanatory Message

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TN166 - Details

• The SAP error message TN166 indicates that a transport request (TR) was imported into the system without using the Support Package Manager (SPM). This can lead to inconsistencies in the system, as the Support Package Manager is designed to ensure that all necessary components and dependencies are handled correctly during the import process.
  
  Cause:
  The error typically arises when:
  
  A transport request is imported directly using transaction codes like STMS (Transport Management System) or SE09 (Transport Organizer) instead of using the Support Package Manager.
  The transport request contains changes that are part of a support package or enhancement package that should be applied through SPM to ensure proper sequencing and dependency management.
  
  
  Solution:
  To resolve this issue, you can follow these steps:
  
  
  Identify the Transport Request: Determine which transport request is causing the error. The error message will usually specify the transport request number.
  
  
  Check Dependencies: Review the contents of the transport request to understand what changes it