How To Fix DMU166 - Material &1 for node &2 is not classified in class &3

DMU166 - Overview

• Message type: E = Error

• Message class: DMU - Digital Mock Up (DMU)

• Message number: 166

• Message text: Material &1 for node &2 is not classified in class &3

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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DMU166 - Details

• The SAP error message DMU166 indicates that a specific material (denoted as &1) for a particular node (denoted as &2) is not classified in the specified class (denoted as &3). This error typically arises in the context of classification and master data management within SAP, particularly when dealing with materials and their classification in the system.
  
  Cause:
  
  Missing Classification: The material in question has not been assigned to the specified classification class. This could happen if the material was created without proper classification or if the classification data was not maintained correctly.
  Incorrect Class Assignment: The material may have been assigned to a different class or may not belong to the class specified in the error message.
  Data Inconsistency: There may be inconsistencies in the master data, such as missing or incorrect entries in the classification system.
  
  
  Solution:
  
  
  Check Material Classification:
  
  Go to the material master data (transaction code MM03) and check if the material is classified