---
title: "Assign phone number to campaign"
method: POST
path: "/v1/10dlc/campaigns/{campaignId}/phone-numbers"
tags: ["10DLC"]
---

# Assign phone number to campaign

`POST /v1/10dlc/campaigns/{campaignId}/phone-numbers`

Assign a US phone number to an approved 10DLC campaign. The campaign must be in approved status.

## Path parameters

- `campaignId` string, required

## Request body

- TenDlcPhoneNumberAssignRequest
  - `phoneNumberId` string, required — ID of the phone number to assign.

## Response `201`

Phone number assigned.

- TenDlcAssignmentResponse
  - `assignment` TenDlcPhoneNumberAssignment, required
    - `id` string, required
    - `campaignId` string, required
    - `phoneNumberId` string, required
    - `status` 'pending' | 'active' | 'failed', required — Assignment status.
    - `failureReason` string, nullable
    - `assignedAt` string, date-time, nullable
    - `createdAt` string, date-time, required
    - `updatedAt` string, date-time, required

## Other responses

- `400` — Campaign not approved or invalid request.
- `401` — Unauthorized.
- `404` — Campaign or phone number not found.

---

[API](https://skmtc.net/zavudev/apis/zavu-unified-messaging-layer-api.md) · [All operations](https://skmtc.net/zavudev/apis/zavu-unified-messaging-layer-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/zavudev/zavu-unified-messaging-layer-api/revisions/07b87b6ae707/schema)