How To Fix MM334 - Class & of material type & is not maintained in material &

MM334 - Overview

• Message type: E = Error

• Message class: MM - Messages for material master maintenance and Customizing

• Message number: 334

• Message text: Class & of material type & is not maintained in 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.

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.

Unfortunately, there isn't any extra information in this error notice.

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MM334 - Details

• The SAP error message MM334 indicates that a specific class and material type combination is not maintained for a given material. This error typically arises in the Materials Management (MM) module when trying to perform operations related to materials that require classification, such as creating or changing a material master record.
  
  Cause:
  The error occurs due to one of the following reasons:
  
  Missing Class Assignment: The material type you are trying to use is not assigned to the classification system or does not have a class assigned to it.
  Incorrect Material Type: The material type specified does not have a corresponding class defined in the system.
  
  Configuration Issues: The configuration settings for the material type or class may not be properly set up in the system.
  
  
  Solution:
  To resolve the MM334 error, you can follow these steps:
  
  
  Check Material Type Configuration:
  
  Go to the transaction code SPRO to access the SAP Customizing Implementation Guide.
  Navigate to Logistics - General >