How To Fix WN226 - No assignments exist in material group hierarchy &

SAP Error Message - Details

• Message type: E = Error

• Message class: WN - Plant master data maintenance (integrated)

• Message number: 226

• Message text: No assignments exist in material group hierarchy &

What causes this issue?

The &V1& material group hierarchy does not contain any material groups
with plant assignments.

System Response

Store material groups cannot be maintained within the material group
hierarchy.

How to fix this error?

Using the plant master or the mass maintenance of the material group
assignments, you can assign and maintain plants for the material groups
below the material group hierarchy.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WN226 - No assignments exist in material group hierarchy & ?

  The SAP error message WN226 "No assignments exist in material group hierarchy" typically occurs when you are trying to access or use a material group hierarchy that has not been properly defined or does not contain any assignments. This can happen in various SAP modules, particularly in materials management (MM) or when dealing with material master data.
  Cause:
  
  Missing Assignments: The material group hierarchy you are trying to access does not have any material groups assigned to it.
  Incorrect Configuration: The material group hierarchy may not have been set up correctly in the system.
  Data Deletion: Assignments may have been deleted or not created during the initial setup.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to view the material group hierarchy.
  
  Solution:
  
  
  Check Material Group Hierarchy:
  
  Go to the transaction code OMD1 (or the relevant transaction for your version) to check the material group hierarchy.
  Ensure that the hierarchy is correctly defined and that there are material groups assigned to it.
  
  
  
  Create or Assign Material Groups:
  
  If there are no material groups assigned, you will need to create them or assign existing ones to the hierarchy.
  Use transaction code OMD2 to create or modify the material group hierarchy.
  
  
  
  Review Configuration:
  
  Ensure that the configuration settings for material groups and hierarchies are correctly set up in the system.
  Check with your SAP configuration team if there are any missing steps in the setup.
  
  
  
  Check Authorizations:
  
  Verify that the user has the necessary authorizations to access the material group hierarchy.
  If needed, consult with your SAP security team to ensure proper roles and permissions are assigned.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help files for more detailed information on material group hierarchies and their configuration.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OMD1, OMD2, and MM01 (for material master creation).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: Consider visiting SAP community forums or discussion boards for additional insights and solutions from other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the WN226 error and ensure that your material group hierarchy is correctly set up and functional.