How To Fix CU731 - Class type & cannot be used for materials

SAP Error Message - Details

• Message type: E = Error

• Message class: CU - Variants / configuration messages

• Message number: 731

• Message text: Class type & cannot be used for materials

What causes this issue?

This class type has not been defined in Customizing as allowed for
variant configuration.

How to fix this error?

Choose a class type which is allowed for variant configuration.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CU731 - Class type & cannot be used for materials ?

  The SAP error message CU731 indicates that a specific class type cannot be used for materials. This typically occurs when there is an issue with the configuration of class types in the classification system of SAP. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Class Type Configuration: The class type you are trying to use is not configured to be used for materials. In SAP, class types are defined in the classification system, and each class type can have specific settings that determine its applicability.
  Material Type Restrictions: Certain class types may be restricted to specific material types. If the material you are trying to classify does not match the allowed material types for that class type, you will encounter this error.
  Missing Authorizations: Sometimes, the user may not have the necessary authorizations to use the specified class type for materials.
  
  Solution:
  
  
  Check Class Type Configuration:
  
  Go to transaction code CL02 (Change Class) and check the configuration of the class type in question.
  Ensure that the class type is set up to be used for materials. You can check the settings under the "General Data" tab.
  
  
  
  Review Material Type Settings:
  
  Verify that the material type you are trying to classify is compatible with the class type. You can check this in the material master data (transaction code MM02).
  If necessary, adjust the class type settings to include the material type you are working with.
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to create or modify classifications for materials. This can be checked with your SAP security team.
  
  
  
  Create a New Class Type:
  
  If the existing class type cannot be modified to meet your needs, consider creating a new class type that is configured correctly for your materials.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for more detailed information on class types and their configurations.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  CL01: Create Class
  CL02: Change Class
  CL03: Display Class
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  
  
  
  SAP Notes: Check SAP Notes for any known issues or updates related to class types and materials.
  
  
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  
  By following these steps, you should be able to resolve the CU731 error and successfully classify your materials in SAP.