---
title: "Register a phone number"
method: POST
path: "/api/profiles/{profile_id}/whatsapp/register_phone_number"
tags: ["WhatsApp"]
---

# Register a phone number

`POST /api/profiles/{profile_id}/whatsapp/register_phone_number`

## Request

- Base URL: `https://api.postproxy.dev`
- URL: `https://api.postproxy.dev/api/profiles/{profile_id}/whatsapp/register_phone_number`
- Auth: HTTP bearer

Registers a number for Cloud API messaging. Needed when the registration after connect left a registration_warning, typically because the number already has its own two-step verification PIN.

## Query parameters

- `profile_group_id` string
- `phone_number_id` string, required
- `pin` string

## Response `200`

Registration result.

- object

## Other responses

- `400`: Missing required parameters.
- `401`: Invalid, missing, or insufficient API key permissions.
- `404`: Resource does not exist or is not accessible.
- `422`: Validation failed.

---

[API](https://skmtc.dev/postproxy/apis/postproxy-social-media-api.md) - [All operations](https://skmtc.dev/postproxy/apis/postproxy-social-media-api/llms.txt) - [OpenAPI document](https://skmtc.dev/postproxy/apis/postproxy-social-media-api/revisions/d54482ac4ce7?raw)