How To Fix M3399 - Classification not defined for material type & of this material

SAP Error Message - Details

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 399

• Message text: Classification not defined for material type & of this material

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 M3399 - Classification not defined for material type & of this material ?

  The SAP error message M3399, which states "Classification not defined for material type & of this material," typically occurs when you are trying to classify a material in SAP, but the classification system has not been set up correctly for the specific material type you are working with.
  Cause:
  
  Missing Classification Definition: The material type you are trying to classify does not have a classification definition in the system.
  Incorrect Material Type: The material type may not be intended for classification, or it may not be configured to use the classification system.
  Configuration Issues: The classification system may not be properly configured in the SAP system, leading to this error when attempting to classify materials.
  
  Solution:
  To resolve the M3399 error, you can follow these steps:
  
  
  Check Material Type Configuration:
  
  Go to the transaction code SPRO (SAP Reference IMG).
  Navigate to Logistics General > Material Master > Basic Settings > Material Types.
  Check the settings for the specific material type in question and ensure that it is configured to allow classification.
  
  
  
  Define Classifications:
  
  Still in the SPRO menu, navigate to Logistics General > Classification System > Define Classes.
  Ensure that the classification system has been set up for the material type you are working with. You may need to create a new class or assign existing classes to the material type.
  
  
  
  Assign Characteristics:
  
  If the classification is defined, ensure that the necessary characteristics are assigned to the class for the material type.
  
  
  
  Check User Authorizations:
  
  Ensure that the user has the necessary authorizations to classify materials. Sometimes, authorization issues can lead to errors.
  
  
  
  Test with a Different Material Type:
  
  If possible, try classifying a different material type that is known to be configured correctly to see if the issue persists.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP Basis or functional team for any specific configurations that may be required for your organization.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  CL02 - Change Class
  CL03 - Display Class
  MM01 - Create Material
  MM02 - Change Material
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  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 identify and resolve the cause of the M3399 error in SAP.