How To Fix CL782 - Class & must be a superclass

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 782

• Message text: Class & must be a superclass

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CL782 - Class & must be a superclass ?

  The SAP error message CL782 indicates that there is an issue with class inheritance in ABAP Object-Oriented programming. Specifically, the error message states that the class you are trying to define or use must be a superclass of the class you are working with. This typically occurs when you are trying to create a subclass that does not properly extend a superclass.
  Cause:
  
  Incorrect Class Hierarchy: The class you are trying to define as a subclass does not inherit from the specified superclass.
  Typographical Errors: There may be a typo in the class name or the superclass name.
  Class Not Activated: The superclass may not be activated, which can lead to the system not recognizing it as a valid superclass.
  Visibility Issues: The superclass may not be visible in the context where you are trying to use it, possibly due to package or transport issues.
  
  Solution:
  
  
  Check Class Definition: Ensure that the class you are trying to create as a subclass is correctly defined to inherit from the intended superclass. The syntax should look like this:
  CLASS subclass_name DEFINITION INHERITING FROM superclass_name.
  
  
  Verify Class Activation: Make sure that the superclass is activated. You can do this by navigating to the class in the ABAP Workbench (SE80 or SE24) and checking its status.
  
  
  Correct Typographical Errors: Double-check the names of both the subclass and superclass for any spelling mistakes.
  
  
  Check Visibility: Ensure that the superclass is accessible in the context where you are trying to use it. If the superclass is in a different package, ensure that the necessary authorizations and visibility settings are in place.
  
  
  Review Class Hierarchy: If you are unsure about the class hierarchy, you can use transaction SE24 to view the class and its relationships.
  
  
  Recompile: If you have made changes to the class definitions, recompile the classes to ensure that all changes are recognized by the system.
  
  
  Related Information:
  
  Transaction Codes: Use SE24 (Class Builder) to manage class definitions and check their hierarchy.
  Documentation: Refer to the SAP Help Portal for detailed documentation on Object-Oriented programming in ABAP.
  Debugging: If the error persists, consider using the ABAP debugger to trace the execution and identify where the class hierarchy is being violated.
  
  By following these steps, you should be able to resolve the CL782 error and ensure that your class definitions are correctly set up in the ABAP environment.