How To Fix OO784 - Event '&' is not contained in the type information

OO784 - Overview

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 784

• Message text: Event '&' is not contained in the type information

Self-Explanatory Message

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OO784 - Details

• The SAP error message OO784, which states "Event '&' is not contained in the type information," typically occurs in the context of Object-Oriented ABAP programming. This error indicates that the event you are trying to reference or trigger is not defined in the class or interface you are working with.
  
  Cause:
  
  Undefined Event: The event you are trying to use has not been defined in the class or interface.
  Typographical Error: There may be a typo in the event name you are trying to reference.
  Scope Issues: The event might be defined in a different class or interface that is not accessible in the current context.
  Inheritance Issues: If you are working with subclasses, the event may not be inherited from the parent class.
  
  
  Solution:
  
  Check Event Definition: Verify that the event you are trying to use is defined in the class or interface. You can do this by checking the class/interface definition in the ABAP Workbench