How To Fix SWF_FLEX_DEF016 - Class &1 does not inherit from class &2

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_FLEX_DEF -

• Message number: 016

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

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_FLEX_DEF016 - Class &1 does not inherit from class &2 ?

  The SAP error message SWF_FLEX_DEF016 indicates that there is an issue with class inheritance in the context of workflow definitions. Specifically, it means that a class (denoted as &1) is expected to inherit from another class (denoted as &2), but it does not. This can occur in various scenarios, such as when defining custom workflow classes or when modifying existing ones.
  Cause:
  
  Incorrect Class Definition: The class defined in the workflow does not extend the required base class. This could be due to a typo in the class name or an incorrect class definition.
  Missing Implementation: The class might not have been implemented correctly or might be missing altogether.
  Changes in Class Hierarchy: If the base class has been changed or removed, any derived classes that depend on it will also be affected.
  Transport Issues: If the class was transported from another system, it might not have been transported correctly, leading to inconsistencies.
  
  Solution:
  
  Check Class Definition: Verify that the class &1 is correctly defined and that it indeed inherits from class &2. You can do this by checking the class definition in the ABAP Workbench (transaction SE80 or SE24).
  Correct Inheritance: If the class does not inherit from the required base class, modify the class definition to ensure it does. This can be done by editing the class in the ABAP Workbench and specifying the correct superclass.
  Implement Missing Methods: If the base class has abstract methods, ensure that the derived class implements these methods.
  Check Transport Requests: If the class was transported, ensure that all related objects were included in the transport request and that they were imported correctly in the target system.
  Recompile Classes: Sometimes recompiling the classes can resolve issues related to inconsistencies. You can do this in the ABAP Workbench.
  Consult Documentation: Review any relevant documentation or notes from SAP regarding the specific classes and workflows you are working with.
  
  Related Information:
  
  Transaction Codes: Use SE80 (Object Navigator) or SE24 (Class Builder) to view and edit class definitions.
  SAP Notes: Check for any SAP Notes related to workflow and class inheritance issues, as they may provide additional insights or solutions.
  Debugging: If the issue persists, consider using the debugger to trace the workflow execution and identify where the class inheritance is failing.
  
  By following these steps, you should be able to resolve the SWF_FLEX_DEF016 error and ensure that your workflow classes are correctly defined and functioning as expected.