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

SAP Error Message - Details

• 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

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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 structure.
  This can be done by either:
  
  Changing the materials to use a different segment structure.
  Deleting the characteristics that are linked to the segment structure from the materials.
  
  
  
  
  
  Unlock the Segment Structure:
  
  Once the materials are no longer associated with the segment structure, you can proceed to unlock it.
  Use the appropriate transaction (like CL02 or CL03) to unlock the segment structure.
  
  
  
  Recheck the Structure:
  
  After unlocking, ensure that the segment structure is functioning as intended and that any changes you need to make can be applied.
  
  
  
  Related Information:
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  CL01 (Create Class)
  CL02 (Change Class)
  CL03 (Display Class)
  CL24 (Display Characteristics)
  
  
  
  Documentation: Review SAP documentation or help files related to classification and segment structures for more detailed guidance on managing these elements.
  
  
  User Permissions: Ensure that you have the necessary permissions to make changes to segment structures and materials.
  
  
  Testing: After making changes, it’s advisable to test the materials and their characteristics to ensure that everything is functioning correctly.
  
  
  If you continue to face issues, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.