Request status
Every 202 Accepted response includes a request_id. Use these
endpoints to check whether your data has been processed successfully.
Status lifecycle: pending → processing → succeeded | failed | dead
For batch ingest (e.g. inventory snapshots), status may be succeeded
with item-level rejections in response_payload.partial_errors, or
failed with response_code: "422" when every item is rejected. See the
GET /requests/{request_id} response examples for both outcomes.