How To Fix /PM0/AB_AT116 - Class &1 must implement interface &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/AB_AT -

• Message number: 116

• Message text: Class &1 must implement interface &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PM0/AB_AT116 - Class &1 must implement interface &2 ?

  The SAP error message /PM0/AB_AT116 Class &1 must implement interface &2 typically indicates that a class in your ABAP code is expected to implement a specific interface, but it does not. This can occur in various scenarios, such as when you are trying to use polymorphism or when a class is expected to conform to a certain contract defined by an interface.
  Cause:
  
  Missing Implementation: The class specified in the error message does not implement the methods defined in the interface.
  Incorrect Class Declaration: The class may not be declared correctly to implement the interface.
  Interface Changes: If the interface has been modified (e.g., methods added or changed), the implementing class may need to be updated accordingly.
  Typographical Errors: There may be a typo in the class name or interface name in the code.
  
  Solution:
  
  
  Implement the Interface: Open the class in the ABAP Workbench (SE80 or SE24) and ensure that it implements all the methods defined in the interface. You can do this by:
  
  Going to the class definition.
  Adding the interface to the class if it is not already included.
  Implementing all required methods from the interface.
  
  
  
  Check Class Declaration: Ensure that the class is declared correctly to implement the interface. The class definition should look something like this:
  CLASS your_class_name DEFINITION
    INHERITING FROM your_super_class
    FINAL
    CREATE PUBLIC
    IMPLEMENTING your_interface_name.
  
  
  Update the Class: If the interface has changed, update the class to implement any new methods or changes in the interface.
  
  
  Check for Typos: Verify that there are no typographical errors in the class name or interface name in your code.
  
  
  Activate Changes: After making the necessary changes, activate the class and the interface to ensure that the changes take effect.
  
  
  Related Information:
  
  ABAP Workbench (SE80): Use this transaction to navigate to the class and interface definitions.
  SE24: This transaction allows you to directly access class definitions.
  SE80: This transaction provides a more comprehensive view of all objects, including classes and interfaces.
  Documentation: Review the SAP documentation for interfaces and classes to understand the requirements for implementing interfaces.
  
  If you continue to experience issues after following these steps, consider checking the SAP community forums or consulting with a colleague who has experience with ABAP development for further assistance.