How To Fix IH670 - No class is assigned to any of the materials

SAP Error Message - Details

• Message type: E = Error

• Message class: IH - structuring

• Message number: 670

• Message text: No class is assigned to any of the materials

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message IH670 - No class is assigned to any of the materials ?

  The SAP error message IH670, which states "No class is assigned to any of the materials," typically occurs in the context of classification in SAP, particularly when dealing with materials that are expected to have classification data associated with them. This error indicates that the system cannot find a class assigned to the materials you are trying to work with, which is necessary for certain processes, such as reporting or categorization.
  Cause:
  
  Missing Class Assignment: The materials in question have not been assigned to any classification class. This can happen if the materials were created without being linked to a class or if the class assignment was removed.
  Incorrect Material Type: Some material types may not support classification, leading to this error if you attempt to classify them.
  Data Inconsistency: There may be inconsistencies in the material master data that prevent the system from recognizing the class assignment.
  Authorization Issues: Sometimes, users may not have the necessary authorizations to view or assign classes to materials.
  
  Solution:
  
  
  Assign a Class to the Material:
  
  Go to the material master record (transaction code MM02).
  Navigate to the Classification view.
  Assign the appropriate class to the material. Ensure that the class is relevant to the material type.
  Save the changes.
  
  
  
  Check Material Type:
  
  Verify that the material type supports classification. If it does not, you may need to change the material type or use a different approach for categorization.
  
  
  
  Review Class Configuration:
  
  Ensure that the classification system is properly configured. Check if the class you are trying to assign exists and is active.
  Use transaction code CL02 to check the class details.
  
  
  
  Data Consistency Check:
  
  Run consistency checks on the material master data to identify any discrepancies that may be causing the issue.
  
  
  
  Authorization Check:
  
  Ensure that you have the necessary authorizations to assign classes to materials. If not, contact your SAP security administrator.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MM02: Change Material Master
  CL02: Change Class
  CL01: Create Class
  CL03: Display Class
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to classification errors.
  
  
  Documentation: Refer to SAP Help documentation for detailed information on material classification and the classification system.
  
  
  By following these steps, you should be able to resolve the IH670 error and ensure that your materials are properly classified in the SAP system.