CANCELED) and the payment is refunded;AWAITING_CARRIER_CANCELLATION and the cancellation is requested from the carrier via API or e-mail. If the carrier supports neither, the request is rejected with 400.200 response means the cancellation was accepted, NOT that it is final. While the order is AWAITING_CARRIER_CANCELLATION the courier may still arrive for pickup. The cancellation is final only when GET /v1/order?hash={orderHash} returns status: CANCELED — then a correction invoice is issued and the funds are returned. There is no webhook; poll GET /v1/order. Tracking (/v1/order/tracking) shows the cancellation only once it is final.