How To Fix MW018 - Material group & not found

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW018 - Material group & not found ?

  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 are trying to use exists. If it does not, you will need to create it.
  
  
  
  Create Material Group:
  
  If the material group does not exist, you can create it using transaction code OMS2.
  Fill in the necessary details and save the new material group.
  
  
  
  Correct Input:
  
  Double-check the input for any typos or errors. Ensure that you are entering the correct material group code.
  
  
  
  Check Authorizations:
  
  Ensure that your user profile has the necessary authorizations to access and use the material group. You may need to contact your SAP security administrator for assistance.
  
  
  
  Consult with SAP Support:
  
  If the issue persists, consider reaching out to your SAP support team or consulting SAP documentation for further troubleshooting.
  
  
  
  Related Information:
  
  Material Groups: Material groups are used in SAP to categorize materials for reporting and analysis purposes. They can also be used for pricing and inventory management.
  Transaction Codes:
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  OMS2: Maintain Material Groups
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to material groups and error MW018.
  
  By following these steps, you should be able to resolve the MW018 error and successfully work with material groups in SAP.