The Update Event Type Notification API updates the notification templates of an event type. It writes the same values as the Calendar Invitation block of the Workflow tab in the Jicoo dashboard.Only the fields present in the request body are updated: an omitted field keeps its current value, and null clears the template. An empty body is rejected with 400.Updating a template does not rewrite the calendar events of existing bookings. It applies to bookings created afterwards, and to existing bookings when they are updated or rescheduled.The Team plan or higher is required.