How To Fix SAFTN_XX201 - Class &1 doesn't inherit from &2

SAP Error Message - Details

• Message type: E = Error

• Message class: SAFTN_XX - SAF-T Cross-Module, Cross-Country

• Message number: 201

• Message text: Class &1 doesn't inherit from &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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAFTN_XX201 - Class &1 doesn't inherit from &2 ?

  The SAP error message SAFTN_XX201 indicates that there is a class inheritance issue in your ABAP code. Specifically, it means that the class specified in the error message (denoted as &1) does not properly inherit from the class it is supposed to inherit from (denoted as &2). This can occur due to several reasons, such as incorrect class definitions, missing implementations, or issues in the class hierarchy.
  Cause
  
  Incorrect Class Declaration: The class &1 may not be declared correctly to inherit from class &2.
  Missing Superclass: The superclass &2 may not exist or may not be accessible in the current context.
  Visibility Issues: The visibility of the superclass might be restricted, preventing the subclass from inheriting from it.
  Typographical Errors: There could be a typo in the class name or in the inheritance declaration.
  Circular Inheritance: There might be a circular reference in the class hierarchy.
  
  Solution
  
  Check Class Declaration: Verify that the class &1 is correctly declared to inherit from class &2. The syntax should be correct, for example:
  CLASS class_name DEFINITION INHERITING FROM super_class_name.
  
  Ensure Superclass Exists: Make sure that the superclass &2 is defined and active in the system.
  Check Visibility: Ensure that the superclass is declared with the appropriate visibility (e.g., PUBLIC, PROTECTED) so that it can be inherited.
  Correct Typos: Double-check for any typographical errors in the class names.
  Review Class Hierarchy: Look for any circular references or issues in the class hierarchy that might be causing the problem.
  Recompile Classes: Sometimes recompiling the classes involved can resolve issues related to outdated definitions.
  
  Related Information
  
  ABAP Class Documentation: Review the SAP documentation on ABAP classes and inheritance to understand the rules and best practices.
  Transaction SE80: Use transaction SE80 (Object Navigator) to navigate through the class definitions and check their properties.
  Transaction SE24: Use transaction SE24 to directly access and manage class definitions.
  Debugging: If the error occurs during runtime, consider using the ABAP debugger to trace the execution and identify where the inheritance issue arises.
  
  By following these steps, you should be able to identify and resolve the issue causing the SAFTN_XX201 error message.