How To Fix W+665 - No material class was selected

SAP Error Message - Details

• Message type: E = Error

• Message class: W+ -

• Message number: 665

• Message text: No material class was selected

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message W+665 - No material class was selected ?

  Certainly! Here's a detailed explanation for the SAP error message W+665 No material class was selected:
  
  SAP Message: W+665 No material class was selected
  
  Cause:
  This warning message occurs when you attempt to perform an operation that requires a material class to be selected or assigned, but no material class has been chosen. Material classes in SAP are used to classify materials based on characteristics and are essential for certain processes such as classification, reporting, or batch management.
  Common scenarios where this message appears:
  
  When creating or changing a material and the system expects a material class to be assigned but none is selected.
  When using classification-related transactions or functions that require a material class.
  When trying to assign characteristics to a material without first selecting a material class.
  
  
  Solution:
  
  
  Select a Material Class:
  
  Go to the material master record (transaction MM01/MM02).
  Navigate to the Classification tab.
  Select or assign the appropriate material class relevant to your material.
  Save the changes.
  
  
  
  Check Configuration:
  
  Ensure that the material class exists and is properly maintained in transaction CL02 (Change Class) or CL03 (Display Class).
  Verify that the material class is assigned to the correct class type (usually 001 for materials).
  
  
  
  Review Process Steps:
  
  If you are using a custom program or user exit, check that the material class is being passed or selected correctly.
  In batch management or variant configuration, ensure that the material class is assigned before proceeding.
  
  
  
  Authorization Check:
  
  Verify that the user has the necessary authorizations to view or assign material classes.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MM01 – Create Material
  MM02 – Change Material
  CL01 – Create Class
  CL02 – Change Class
  CL03 – Display Class
  CL20N – Change Characteristics for Class
  
  
  
  SAP Notes:
  
  Check SAP Notes related to classification and material master for any known issues or patches.
  
  
  
  Material Class:
  
  Material classes are used to group materials with similar characteristics.
  Characteristics are assigned to material classes and then to materials for detailed classification.
  
  
  
  Impact:
  
  Without selecting a material class, classification data cannot be maintained.
  This may affect reporting, batch management, variant configuration, and other processes relying on classification.
  
  
  
  
  If you provide the exact transaction or process where this message appears, I can give more tailored advice.