How To Fix OL714 - The object type already implements the interface '&'

SAP Error Message - Details

• Message type: E = Error

• Message class: OL - Workflow object types: Run-time system

• Message number: 714

• Message text: The object type already implements the interface '&'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OL714 - The object type already implements the interface '&' ?

  The SAP error message OL714 indicates that there is an attempt to implement an interface in a class or a structure that already implements that interface. This typically occurs in ABAP programming when you are trying to add an interface to a class that already has it implemented.
  Cause:
  
  Duplicate Implementation: The class or structure you are working with already implements the specified interface. In ABAP, a class can implement an interface only once.
  Incorrect Class Definition: There may be a mistake in the class definition where the interface is being declared multiple times.
  Inheritance Issues: If the class is inheriting from a superclass that already implements the interface, trying to implement it again in the subclass will trigger this error.
  
  Solution:
  
  Check Class Definition: Review the class definition to ensure that the interface is not already implemented. You can do this by checking the INTERFACES section of the class definition.
  Remove Duplicate Implementation: If you find that the interface is already implemented, you should remove the duplicate declaration from the class.
  Review Inheritance: If the class is inheriting from a superclass that implements the interface, you do not need to implement it again in the subclass. Remove the interface declaration from the subclass.
  Use the Interface Correctly: Ensure that you are using the interface correctly in your code. If you need to extend functionality, consider using composition or other design patterns instead of re-implementing the interface.
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP documentation for more details on interfaces and class definitions in ABAP.
  SAP Community: You can find discussions and solutions related to similar issues on the SAP Community forums.
  Debugging Tools: Use the ABAP Workbench (SE80) or Class Builder (SE24) to inspect the class and its interfaces to identify where the duplication is occurring.
  
  By following these steps, you should be able to resolve the OL714 error and ensure that your class definitions are correct.