Use this endpoint to trigger API Triggered Canvases, which are created on the Dashboard and initiated via the API. You can pass in canvas_entry_properties that will be templated into the messages sent by the first steps of the Canvas.
This endpoint allows you to schedule Canvas messages (up to 90 days in advance) via API Triggered delivery, allowing you to decide what action should trigger the message to be sent. Please note that to send messages with this endpoint, you must have a Canvas ID, created when you build a Canvas.