---
title: "Verify phone number"
method: POST
path: "/users/{user_id}/phonenumber"
tags: ["PhoneNumber"]
---

# Verify phone number

`POST /users/{user_id}/phonenumber`

Starts a phone number verification session.

## Request body

- object
  - `channel` 'sms' | 'whatsapp' | 'call', required — The channel used to receive the verification code.
  - `phone_number` string, required — The phone number used to receive the verification code.

## Response `200`

OK

- object
  - `sid` string — Session ID of the verification.

## Other responses

- `400` — Bad Request
- `403` — Forbidden
- `409` — Conflict

---

[API](https://skmtc.net/upsun/apis/upsun-com-rest-api.md) · [All operations](https://skmtc.net/upsun/apis/upsun-com-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/upsun/upsun-com-rest-api/revisions/6cc88fde6435/schema)