> ## Documentation Index
> Fetch the complete documentation index at: https://nango.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Back Market - How do I link my account?

# Overview

To authenticate with Back Market, you will need:

1. **Platform** — The regional Back Market platform your seller account operates on
2. **API Token** — The token generated from the Integrations page of your Back Market Back Office

This guide will walk you through obtaining each of these values.

<Note>
  Back Market also requires a Country Code and a User-Agent on every API request. These are integration-level settings your app configures, not something the seller provides here — see [Back Market](/docs/api-integrations/back-market) for details.
</Note>

### Prerequisites

* An approved Back Market seller account
* Access to your Back Market Back Office

### Instructions

#### Step 1: Choosing your platform

Back Market operates three separate platforms, each with its own domain, seller account, and API token — and each has a separate preprod (sandbox) environment for testing:

| Platform | Countries                                                                                                                 | Production domain      | Preprod domain             |
| -------- | ------------------------------------------------------------------------------------------------------------------------- | ---------------------- | -------------------------- |
| EU       | France, Belgium, Spain, Germany, Austria, Italy, United Kingdom, Netherlands, Portugal, Ireland, Greece, Slovakia, Sweden | `www.backmarket.fr`    | `preprod.backmarket.fr`    |
| US / NA  | United States                                                                                                             | `www.backmarket.com`   | `preprod.backmarket.com`   |
| AP       | Japan, Australia                                                                                                          | `www.backmarket.co.jp` | `preprod.backmarket.co.jp` |

Pick the domain matching both the platform your seller account was created on and the environment (production or preprod) you're connecting to. A token generated on one platform or environment does not work on another.

#### Step 2: Generating your API token

1. Log in to your Back Market Back Office and go to **Options → Integrations** (`https://www.backmarket.fr/bo-seller/onboarding/options/integrations` for the EU platform — swap the domain for your platform).
2. Click **Add new integration**.
3. For the integration type, choose **Other integration**.

<img src="https://mintcdn.com/nango/kNR33UhH5M60ateQ/api-integrations/back-market/generate_api_key.png?fit=max&auto=format&n=kNR33UhH5M60ateQ&q=85&s=eb4b21bdf117f0ad4aac328c9bdb3f79" style={{maxWidth: "450px" }} width="1912" height="853" data-path="api-integrations/back-market/generate_api_key.png" />

4. Click **Confirm** to generate your API key.
5. Copy the generated API token. It's a Basic-auth token.

<Warning>The token is shown only once. Store it securely and never expose it in client-side code, logs, or URLs.</Warning>

#### Step 3: Enter credentials in the Connect UI

1. Open the form where you need to authenticate with Back Market.
2. Select your **Platform**.
3. Enter your **API Token**.
4. Submit the form, and you should be successfully authenticated.

<img src="https://mintcdn.com/nango/kNR33UhH5M60ateQ/api-integrations/back-market/form.png?fit=max&auto=format&n=kNR33UhH5M60ateQ&q=85&s=9d8bd693baece71803d3c78ab435d7e2" style={{maxWidth: "450px" }} width="499" height="694" data-path="api-integrations/back-market/form.png" />

You are now connected to Back Market.

***