How To Fix MH351 - Configuration class &1 not assigned to material group &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MH - Maintain Material Master Data (Retail)

• Message number: 351

• Message text: Configuration class &1 not assigned to material group &2

What causes this issue?

You want to assign configuration class &V1& to material group &V2&. This
configuration class and material group have the same variant-creating
characteristics assigned.

System Response

The system does not assign the configuration class to the material
group.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MH351 - Configuration class &1 not assigned to material group &2 ?

  The SAP error message MH351 indicates that a configuration class is not assigned to a specific material group. This error typically arises in the context of material master data management, particularly when dealing with configurable materials in SAP.
  Cause:
  The error occurs when:
  
  A material is being created or modified, and the system expects a configuration class to be assigned to the material group.
  The configuration class that is supposed to be linked to the material group is either not defined or not assigned correctly in the system.
  
  Solution:
  To resolve the error MH351, you can follow these steps:
  
  
  Check Material Group Configuration:
  
  Go to the transaction code OMD1 (or navigate through the menu: Logistics > Material Master > Settings > Material Groups).
  Verify that the material group in question (e.g., &2) is correctly set up and that it is intended to use a configuration class.
  
  
  
  Assign Configuration Class:
  
  If the configuration class is not assigned, you need to assign it to the material group.
  You can do this in the same configuration area where you checked the material group. Look for an option to assign a configuration class to the material group.
  
  
  
  Check Configuration Class:
  
  Ensure that the configuration class (e.g., &1) exists and is correctly defined in the system.
  You can check this using transaction code CL02 (Change Class) to see if the class is active and properly configured.
  
  
  
  Material Master Data:
  
  If you are working with a specific material, check the material master data using transaction code MM03 (Display Material) to ensure that the material is linked to the correct material group and configuration class.
  
  
  
  Consult Documentation:
  
  If you are unsure about the configuration settings, refer to SAP documentation or consult with your SAP functional team for guidance on how to set up material groups and configuration classes correctly.
  
  
  
  Testing:
  
  After making the necessary changes, try to create or modify the material again to see if the error persists.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  OMD1: Material Group Configuration
  CL02: Change Class
  MM03: Display Material
  
  
  Material Master Data: Understanding how material groups and configuration classes work is crucial for managing materials effectively in SAP.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to this error message.
  
  By following these steps, you should be able to resolve the MH351 error and ensure that your material groups and configuration classes are set up correctly in SAP.