Returns a single number order by id, including its current lifecycle state and, once completed, the number it produced. Identifier of the order. Identifier of this purchase order. The number being acquired, in E.164 format. Physical type of the number being acquired. Identifier of the number this order produced, set when `status` is `completed`. Pass it as `number_id` to `GET /v1/numbers/{number_id}` or `DELETE /v1/numbers/{number_id}`. `null` until the order completes. Human-readable reason the purchase failed. `null` unless status is failed. An order can fail some time after it was created, so `updated_at` tells you when the failure was recorded rather than when the order was placed. When the purchase completed and the number became owned (status completed). `null` for orders still in progress or failed.