What must match with a call event for it to be effective?

A call event in a state machine context triggers a transition based on a specific operation that is invoked. For the call event to effectively initiate a transition, it is crucial that both components—event name and the operation name—are aligned.

The event name must match exactly with the call event defined in the state machine. This is essential because the call event is designed to initiate a specific action or transition when triggered. Additionally, the name of the operation that is executed must match the operation being called within the context of the executing structure (for example, a class or component that contains the state machine). This matching ensures that the right behavior defined in the state machine aligns with the actual implementation of that operation.

Matching both these elements ensures that the call event's intent is properly understood and executed within the state machine's framework, leading to the correct response or transition when the call is made. Hence, for a call event to be effective, it is necessary for both the event name and the operation name to be correctly specified.