How To Fix WER_CUST004 - Class &1 doesn't extend class &2.

WER_CUST004 - Overview

• Message type: E = Error

• Message class: WER_CUST -

• Message number: 004

• Message text: Class &1 doesn't extend 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 WER_CUST004 - Class &1 doesn't extend class &2. ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WER_CUST004 Class &1 doesn't extend class &2.
  
  
  Cause:
  This error occurs when a class (denoted by &1) is expected to be a subclass (i.e., it should inherit from) another class (denoted by &2), but it does not. In other words, the system checks the inheritance relationship between two classes and finds that the first class does not extend the second class as required.
  This typically happens in scenarios where:
  
  A class is expected to implement or extend a specific superclass/interface as per configuration or coding logic.
  Custom or standard code tries to instantiate or use a class assuming it inherits from a particular base class, but the actual class does not.
  In enhancement or extension scenarios, the system expects a certain inheritance hierarchy to be maintained.
  
  
  
  Solution:
  
  
  Check Class Inheritance:
  
  Go to transaction SE24 (Class Builder).
  Enter the class name &1.
  Check the Superclass tab or the inheritance hierarchy.
  Verify if