How To Fix OO181 - Class &1 is already a superclass of &2

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 181

• Message text: Class &1 is already a superclass of &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 OO181 - Class &1 is already a superclass of &2 ?

  The SAP error message OO181 indicates that there is an issue with class inheritance in the ABAP Object-Oriented programming environment. Specifically, the error message states that the class you are trying to define as a subclass (or child class) is already a superclass (or parent class) of the class you are trying to define as a superclass. This creates a circular reference or an invalid inheritance hierarchy.
  
  Cause:
  The error occurs when:
  
  You attempt to create a subclass that is already a superclass of another class.
  There is a misconfiguration in the class hierarchy, leading to a situation where the system cannot resolve the inheritance correctly.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Class Hierarchy: Review the class definitions and their relationships. Ensure that the class you are trying to define as a subclass is not already defined as a superclass of the class you are trying to define as a superclass.
  
  
  Modify