How To Fix SGT_01408 - Cannot unlock seg. structure &1; structure already used by materials

SGT_01408 - Overview

• Message type: E = Error

• Message class: SGT_01 - SGT_01

• Message number: 408

• Message text: Cannot unlock seg. structure &1; structure already used by materials

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message SGT_01408 - Cannot unlock seg. structure &1; structure already used by materials ?

  The SAP error message SGT_01408 indicates that a segment structure cannot be unlocked because it is currently being used by materials. This typically occurs in the context of SAP's classification system, where segment structures are used to define characteristics for materials.
  
  Cause:
  The error arises when you attempt to unlock a segment structure that is still associated with one or more materials. This means that the segment structure is actively in use, and SAP prevents changes to ensure data integrity.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify the Materials Using the Structure:
  
  Use transaction codes like CL02 (Change Class) or CL03 (Display Class) to find out which materials are linked to the segment structure.
  Check the characteristics assigned to the materials to see if they are using the segment structure in question.
  
  
  
  Remove the Association:
  
  If you need to unlock the segment structure, you will have to remove the association of the materials with that