How To Fix WW020 - Material group material & already exists

WW020 - Overview

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 020

• Message text: Material group material & already exists

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Please enter a new key term.

Error message extract from SAP system. Copyright SAP SE.

WW020 - Details

• The SAP error message WW020, which states "Material group material & already exists," typically occurs when you attempt to create or modify a material in SAP and the specified material group already has an existing entry in the system. This can happen in various scenarios, such as when creating a new material or trying to assign a material group to an existing material.
  
  Cause:
  
  Duplicate Entry: The material group you are trying to assign to the material already exists in the system for another material.
  Incorrect Material Group: You may be trying to use a material group that is not valid or has been incorrectly defined.
  Data Consistency Issues: There may be inconsistencies in the data that lead to the system recognizing the material group as already existing.
  
  
  Solution:
  
  
  Check Existing Material Groups: 
  
  Use transaction codes like MM03 (Display Material) or MM02 (Change Material) to check if the material group is already assigned to another material.
  You