---
title: "Initialize Whatsapp phone number verification"
method: POST
path: "/whatsapp/business_accounts/{id}/phone_numbers"
tags: ["Whatsapp Phone Numbers"]
---

# Initialize Whatsapp phone number verification

`POST /whatsapp/business_accounts/{id}/phone_numbers`

## Request

- Base URL: `https://api.telnyx.com/v2`
- URL: `https://api.telnyx.com/v2/whatsapp/business_accounts/{id}/phone_numbers`
- Auth: HTTP bearer

Start the verification process to register a phone number with a WhatsApp Business Account.

## Path parameters

- `id` string, required

## Request body

- WhatsappPhoneNumberVerificationRequest
  - `phone_number` string, required
  - `display_name` string, required
  - `verification_method` 'sms' | 'voice'
  - `language` string

## Response `204`

Verification initiated

## Other responses

- `4XX`: Unexpected error

## Changes

- **2026-10-15** `a72569d69430`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/team-telnyx/apis/telnyx-api/changes/whatsapp/business_accounts/:id/phone_numbers/post.md)

---

[API](https://skmtc.dev/team-telnyx/apis/telnyx-api.md) - [All operations](https://skmtc.dev/team-telnyx/apis/telnyx-api/llms.txt) - [OpenAPI document](https://skmtc.dev/team-telnyx/apis/telnyx-api/revisions/0f17b8167873?raw)