---
title: "B2B duplication check for email and phone number"
method: GET
path: "/b2b/v2/users/duplicated"
tags: ["APIs for the B2B service (ex. Bespin)"]
---

# B2B duplication check for email and phone number

`GET /b2b/v2/users/duplicated`

## Query parameters

- `email` string, required
- `phoneNumber` string, required

## Response `200`

OK

- WinclResponseDataContactDuplicated
  - `code` string
  - `data` ContactDuplicated
    - `emailDuplidated` boolean
    - `phoneNumberDuplidated` boolean
  - `message` string

## Other responses

- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not Found

---

[API](https://skmtc.net/wincl/apis/wincl-api.md) · [All operations](https://skmtc.net/wincl/apis/wincl-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/wincl/wincl-api/revisions/662edcbbf2b3/schema)