---
title: "Retrieve a carrier registration"
description: "One carrier registration (sreg_…), read as List carrier registrations reads it. `GET /api/v1/sms/registrations/{id}`"
url: https://www.unitpost.com/docs/sms/get-sms-registrations-id
section: "SMS API reference"
updated: 2026-11-11
---
# Retrieve a carrier registration

`GET /api/v1/sms/registrations/{id}`

One carrier registration (`sreg_…`), read as [List carrier registrations](https://www.unitpost.com/docs/sms/get-sms-registrations) reads it. Read a resubmit, a removal or a replacement back with it. Requires the `sms:read` capability.

## Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `id` | path | string | yes | — |

## Response fields (200)

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `object` | string | yes | — |
| `id` | string | yes | — |
| `type` | string | yes | `us_ten_dlc_brand`, `us_ten_dlc_campaign`, or a toll-free verification. |
| `brand_id` | string \| null | yes | — |
| `status` | string | yes | The carrier review state: `draft`, `submitted`, `reviewing`, `requires_updates`, `complete`, `closed`, … |
| `requires_action` | boolean | yes | The customer must act (the carrier asked for changes). |
| `feedback` | object[] \| null | yes | The carrier's reasons when it asks for changes or closes it (`reason`, `description`, `field_path`, `link`). |
| `use_case` | string \| null | yes | — |
| `message_type` | string \| null | yes | — |
| `parent_registration_id` | string \| null | yes | — |
| `auto_provision_number` | boolean \| null | yes | 10DLC campaigns: a number is leased when carriers approve. |
| `sender` | object \| null | yes | 10DLC campaigns: the number it backs, once one exists. |
| `setup_state` | string \| null | yes | 10DLC campaigns: one customer-facing state over the campaign and its number. |
| `number_withheld_reason` | string \| null | yes | Why an approved campaign's number isn't being leased (e.g. the plan has no carrier resources). |
| `archived_at` | string \| null | yes | — |
| `submitted_at` | string \| null | yes | — |
| `completed_at` | string \| null | yes | — |
| `created_at` | string | yes | — |

## Responses

| Status | Description |
| --- | --- |
| 200 | The registration. |
| 401 | Missing or invalid API key. |
| 403 | Insufficient scope. |
| 404 | Registration not found, or SMS is not enabled. |
| 422 | An unknown query key. |

## Example request

```bash
curl -X GET 'https://www.unitpost.com/api/v1/sms/registrations/123' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'User-Agent: my-app/1.0'
```

## Example response (200)

```json
{
  "object": "sms_registration",
  "id": "id_123",
  "type": "string",
  "brand_id": "brand_123",
  "status": "queued",
  "requires_action": false,
  "feedback": [
    {}
  ],
  "use_case": "string",
  "message_type": "string",
  "parent_registration_id": "parent_registration_123",
  "auto_provision_number": false,
  "sender": {
    "id": "id_123",
    "status": "queued",
    "phone_number": "string"
  },
  "setup_state": "string",
  "number_withheld_reason": "string",
  "archived_at": "2026-01-01T00:00:00.000Z",
  "submitted_at": "2026-01-01T00:00:00.000Z",
  "completed_at": "2026-01-01T00:00:00.000Z",
  "created_at": "2026-01-01T00:00:00.000Z"
}
```

## Links

- HTML reference (with Node.js, Python, Ruby, PHP, Laravel, Go, Java, Rust, .NET and CLI examples): https://www.unitpost.com/docs/sms/get-sms-registrations-id
- OpenAPI 3.1 (full schemas): https://www.unitpost.com/api/v1/openapi.json