How To Fix MW381 - &1 is not a valid class type

MW381 - Overview

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 381

• Message text: &1 is not a valid class type

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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Smart SAP Assistant

• What is the cause and solution for SAP error message MW381 - &1 is not a valid class type ?

  The SAP error message "MW381 &1 is not a valid class type" typically occurs in the context of Material Management (MM) or when dealing with classification in SAP. This error indicates that the system is unable to recognize the specified class type, which is essential for classifying materials or other objects in the system.
  
  Cause:
  
  Invalid Class Type: The class type specified in the transaction or configuration does not exist in the system or is incorrectly entered.
  
  Configuration Issues: The class type may not be properly configured in the system, or it may have been deleted or deactivated.
  Authorization Issues: The user may not have the necessary authorizations to access the specified class type.
  Data Entry Errors: There may be typographical errors in the class type field when entering data.
  
  
  Solution:
  
  
  Check Class Type: Verify that the class type you are trying to use is valid. You can do this by navigating to the classification system in