How To Fix MW018 - Material group & not found

MW018 - Overview

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 018

• Message text: Material group & not found

What causes this issue?

The material class has not been defined in the classification system.

System Response

A check was made whether the material class was defined in the
classification system.

How to fix this error?

Create the material class in the classification system.

Error message extract from SAP system. Copyright SAP SE.

MW018 - Details

• The SAP error message MW018 ("Material group & not found") typically occurs when you are trying to create or modify a material in the SAP system, and the specified material group does not exist in the system. This can happen in various transactions related to material management, such as creating a new material master record.
  
  Cause:
  
  Non-Existent Material Group: The material group you are trying to use has not been defined in the system.
  Incorrect Input: There may be a typo or incorrect entry in the material group field.
  Authorization Issues: The user may not have the necessary permissions to view or use the specified material group.
  Data Consistency Issues: The material group may have been deleted or is inactive in the system.
  
  
  Solution:
  
  
  Check Material Group:
  
  Go to the transaction code OMSR (or use the menu path: Logistics > Material Management > Material Master > Material > Create (Special) > Material Group).
  Verify if the material group you