# ![](/assets/step3.882dd6eb157abc25c1f2895637ba8769f3b55aa52288a40e94bd0d9550a670c5.9c1bb791.svg) Purchase label

This is a 2nd step of the label purchase flow where we first create a shipment object (and get rates for a given shipment). Then, we purchase a label for the provided ‘rate’.

## HTTP Method

POST

## URL


```
https://api.goshippo.com/transactions/
```

## Purchase from created Shipment

This is a flow where we first create a shipment object (and get rates for a given shipment). Then, we purchase a label for the provided `rate`.

### Request Payload

| Parameter | Description |
|  --- | --- |
| rate* | `object_id` of the rate object we get in the [create shipments call response](/docs/carriers/integration_guides/royalmail-tracked/create_shipment#response-sample). |
| label_file_type* | Allowed values: `PDF`, `PDF_A4` |
| async | Set to true if you want to poll for the result and receive faster response |


Note: Parameters with an * are mandatory

### Example

#### Request Sample


```shell
curl --location --request POST 'https://api.goshippo.com/transactions' \
--header 'Authorization: ShippoToken shippo_live_***’ \
--header 'Content-Type: application/json' \
--data-raw '{
    "rate": "32444e5afe5c4d5fa44de02e4b56870d",
    "async": false,
    "label_file_type": "PDF"
}'
```

#### Response Sample


```json
{
   "object_state": "VALID",
   "status": "SUCCESS",
   "object_created": “2025-08-05T21:43:41.829Z”,
   "object_updated":“2025-08-05T21:43:41.829Z”,
   "object_id": "cbc1a12243db44b9ae56ef3ca502b8c3",
   "object_owner": expn-prod-test@goshippo.com",
   "test": false,
   "rate": "32444e5afe5c4d5fa44de02e4b56870d",
   "tracking_number": "TQ966044837GB",
   "tracking_status": "PRE_TRANSIT",
   "eta": null,
   "tracking_url_provider": "",
   "label_url": "you_will_find_your_label_url_here",
   "commercial_invoice_url": null,
   "messages": [],
   "order": null,
   "metadata": "",
   "parcel": "bf276a9f955f43e7b7a75345687b9f4d",
   "billing": {
       "payments": []
   },
   "qr_code_url": null
}
```

## Sample Label

Below is a sample PDF label for a Royal Mail C2C MCA Tracked 48 for Post Office Drop.

![](/assets/rm_sample_label.3c8e078a2fccf3bb7bac280780fee679b3f8272d8b9c1f419d63b0f0e23e02b5.594db778.png)

After you have created your label and shipped your package, you may request tracking status updates by following the process described in [Step 4: Track](/docs/carriers/integration_guides/royalmail-tracked/track).