Shipment Assignment Cancelled
Oway sends this status event to carrier webhook endpoints that explicitly select it.
| Property | Value |
|---|---|
| Event type | shipment.assignment_cancelled |
| Audience | carrier |
| Category | status |
| Schema version | 1 |
Use event_id as the idempotency key in your receiver. The data object is
event-specific; all envelope fields follow the shared version-one contract.
Example
{"schema_version":1,"event_id":"example:shipment_cancelled:1:assignment_cancelled","type":"shipment.assignment_cancelled","category":"status","occurred_at":"2026-07-24T14:05:00Z","recorded_at":"2026-07-24T14:05:02Z","supersedes":null,"data":{"shipment_id":"shp_example","order_number":"OW-ABC12","previous_status":"accepted","status":"cancelled","cancellation_reason":"customer_cancellation","cancellation_source":"shipper_portal"}}Verify the signature against the exact raw bytes before parsing this object. See
Verify signatures.