POST call made from GNet to the sending party’s web service listener.
Register your listener before you send your first trip — it is the only way status changes, rejections, and cancellations on trips you farm out reach you. API Gateway accounts and reservation platforms enter it themselves as the Callback URL under Platform Configuration in the Connect dashboard; it is a separate listener from a Farm In endpoint. Everyone else: let the GRiDD team know when your web service is ready and we will configure it for you.