---
title: "Resubmit a 10DLC campaign"
description: "Resubmit a 10DLC campaign carriers sent back (requires_updates, requires_authentication), or whose first submit never reached them, from a messaging program: fix what carriers flagged there first (feedback on List carrier registrations). `POST /api/v1/sms/registrations/{id}/resubmit`"
url: https://www.unitpost.com/docs/sms/post-sms-registrations-id-resubmit
section: "SMS API reference"
updated: 2026-11-11
---
# Resubmit a 10DLC campaign

`POST /api/v1/sms/registrations/{id}/resubmit`

Resubmit a 10DLC campaign carriers sent back (`requires_updates`, `requires_authentication`), or whose first submit never reached them, from a messaging program: fix what carriers flagged there first (`feedback` on [List carrier registrations](https://www.unitpost.com/docs/sms/get-sms-registrations)). Free: the same registration and committed fee; the fee tier can't change. A new `opt_in_screenshot_file_id` replaces the screenshot on file. An identical resubmission is refused (`registration_unchanged`) unless `acknowledge_unchanged`. Takes an `Idempotency-Key`. Requires the `sms:manage` capability.

## Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `id` | path | string | yes | — |
| `Idempotency-Key` | header | string | no | Any unique string (1–256 characters, e.g. a UUID). Retrying with the same key and the same body within 24 hours returns the first result instead of sending again; the same key with a different body is `409 invalid_idempotent_request`, and one still in flight is `409 concurrent_idempotent_requests`. |

## Request body

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `messaging_program_id` | string | yes | The messaging program (`prog_…`) holding the corrected use case: fix what carriers flagged there first (PATCH /sms/messaging-programs/{id}), then resubmit from it. Its fee tier must match the campaign's (a low-volume campaign stays low-volume). |
| `opt_in_screenshot_file_id` | string | no | A new opt-in screenshot (POST /files, purpose `sms_opt_in_evidence`). Without one, the screenshot carriers already have is sent again. |
| `acknowledge_unchanged` | boolean | no | Resubmit although nothing changed since carriers sent it back, because the cause was fixed outside Unitpost (the privacy page now loads). Without it an identical resubmission is refused (`registration_unchanged`). |

## Response fields (200)

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `object` | string | yes | — |
| `registration_id` | string | yes | — |
| `status` | string \| null | yes | The registration's state after the resubmission (`submitted`, `reviewing`, …); follow it on GET /sms/registrations. |
| `resubmitted` | boolean | yes | — |

## Responses

| Status | Description |
| --- | --- |
| 200 | Resubmitted. |
| 400 | The body isn't JSON. |
| 401 | Missing or invalid API key. |
| 403 | Insufficient scope, SMS isn't on this plan, or the account is under review (`account_under_review`). |
| 404 | Registration, program or file not found, or SMS is not enabled. |
| 409 | Not awaiting corrections, a fee tier change, the brand no longer verified, nothing changed (`registration_unchanged`), or the `Idempotency-Key` in use. |
| 422 | The program as a campaign would be refused (`details[]` names the program fields), a bad file, or an unknown key. |
| 429 | Too many carrier submissions; retry after the wait. |
| 502 | The carrier registry didn't answer; try again. |

## Example request

```bash
curl -X POST 'https://www.unitpost.com/api/v1/sms/registrations/123/resubmit' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'User-Agent: my-app/1.0' \
  -H 'Content-Type: application/json' \
  -d '{ }'
```

## Example response (200)

```json
{
  "object": "sms_registration_resubmission",
  "registration_id": "registration_123",
  "status": "queued",
  "resubmitted": true
}
```

## Links

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