How To Fix UAMO009 - Class "&1": Method "&2" should be implemented by subclass

SAP Error Message - Details

• Message type: E = Error

• Message class: UAMO - UA Modeler

• Message number: 009

• Message text: Class "&1": Method "&2" should be implemented by subclass

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UAMO009 - Class "&1": Method "&2" should be implemented by subclass ?

  The SAP error message UAMO009 indicates that a method defined in a superclass (or interface) is expected to be implemented in a subclass, but it has not been implemented. This is a common issue in object-oriented programming, particularly in environments like ABAP (Advanced Business Application Programming) used in SAP systems.
  Cause:
  
  Abstract Method Not Implemented: The superclass or interface defines an abstract method that must be implemented in any subclass. If the subclass does not provide an implementation for this method, the system will raise this error.
  Incorrect Class Hierarchy: The subclass may not be correctly inheriting from the superclass or interface that defines the method.
  Typographical Errors: There may be a typo in the method name or signature in the subclass, causing the implementation to be unrecognized.
  
  Solution:
  
  
  Implement the Method: Go to the subclass that is causing the error and implement the required method. Ensure that the method signature matches exactly with that defined in the superclass or interface.
  
  
  Example:
  CLASS my_subclass DEFINITION INHERITING FROM my_superclass.
    PUBLIC SECTION.
      METHODS my_method. " Ensure this matches the superclass/interface
  ENDCLASS.
  
  CLASS my_subclass IMPLEMENTATION.
    METHOD my_method.
      " Implementation code here
    ENDMETHOD.
  ENDCLASS.
  
  
  
  
  Check Class Hierarchy: Verify that the subclass is correctly inheriting from the intended superclass or interface. If there are multiple levels of inheritance, ensure that the method is defined in the correct parent class.
  
  
  Review Method Signature: Ensure that the method name, parameters, and return types match exactly with the definition in the superclass or interface. Any discrepancies can lead to this error.
  
  
  Activate the Class: After implementing the method, make sure to activate the class to ensure that the changes take effect.
  
  
  Check for Multiple Implementations: If the method is defined in multiple interfaces or superclasses, ensure that the implementation is consistent across all subclasses.
  
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP documentation for more details on class and method definitions in ABAP.
  Debugging: Use the ABAP debugger to trace the execution and identify where the error is being triggered.
  SAP Community: Engage with the SAP community forums for additional insights and solutions from other developers who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the UAMO009 error and ensure that your subclass correctly implements the required methods.