How To Fix /SCMB/CNA012 - Class &1 does not inherit from class &2

/SCMB/CNA012 - Overview

• Message type: E = Error

• Message class: /SCMB/CNA -

• Message number: 012

• Message text: Class &1 does not inherit from class &2

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 /SCMB/CNA012 - Class &1 does not inherit from class &2 ?

  The SAP error message /SCMB/CNA012 Class &1 does not inherit from class &2 typically occurs in the context of SAP Advanced Planning and Optimization (APO) or Supply Chain Management (SCM) when there is an issue with class inheritance in the Customizing or configuration of the system.
  
  Cause:
  This error indicates that a class (denoted as &1) is expected to inherit from another class (denoted as &2), but it does not. This can happen due to several reasons:
  
  Incorrect Class Definition: The class definition for &1 may not be set up correctly to inherit from &2.
  Changes in Class Hierarchy: If there have been recent changes to the class hierarchy or if classes were modified or deleted, it could lead to this error.
  
  Configuration Issues: There may be issues in the configuration settings where the system expects a certain class structure that is not met.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Class Definitions:
  
  Go to