# Common Request Headers and Parameters

This document describes the request headers and parameters that are common to all Creators API operations.

## Headers

The following table describes the HTTP headers that must be included in all Creators API requests:

| Header | Definition | Required | Example Value |
| :--- | :--- | :--- | :--- |
| Content-Type | The content type of the request body. Must be set to `application/json`. | Yes | `application/json` |
| Authorization (using v2.x credentials) | Bearer token for authenticating API requests with v2.x credentials. The value should be in the format: `Bearer <access_token>, Version <credential_version>` where credential_version is `2.1` for NA, `2.2` for EU, `2.3` for FE. | Yes | `Bearer eyJraWQiOiJ..., Version 2.1` |
| Authorization (using v3.x credentials) | Bearer token for authenticating API requests with v3.x credentials. Simply use: `Bearer <access_token>`. No version header required. | Yes | `Bearer Atc│MQICIJvS...` |
| x-marketplace | Target Amazon marketplace passed as an HTTP header. The value determines the locale where the API request is targeted. For example: `www.amazon.com` for US, `www.amazon.co.uk` for UK. For more information, refer [Marketplace Reference](#marketplace-reference). | Yes | `www.amazon.com` |

## Parameters

The following table describes the request parameters that are common to all Creators API operations:

| Parameter | Definition | Required | Example Value |
| :--- | :--- | :--- | :--- |
| marketplace | Target Amazon marketplace. The value determines the locale where the API request is targeted. For example: `www.amazon.com` for US, `www.amazon.co.uk` for UK. For more information, refer [Marketplace Reference](#marketplace-reference). | Yes | `www.amazon.com` |
| partnerTag | An alphanumeric token that uniquely identifies a partner. In case of an associate, this token is the means by which Amazon identifies the Associate to credit for a sale. Specify the `store ID` or `tracking ID` of a valid associate store from the requested marketplace as the value for `partnerTag`. For example, If `store-20` and `store-21` are store id or tracking id of customer in United States and United Kingdom marketplaces respectively, then customer needs to pass `store-20` as `partnerTag` in all Creators API requests for United States marketplace and `store-21` as `partnerTag` in all Creators API requests for United Kingdom marketplace. To obtain a Partner Tag, see [Sign up as an Amazon Associate](en-us/onboarding/sign-up-as-an-amazon-associate). | Yes | `store-20` |

## Marketplace/Locale Reference

| Locale | Marketplace | Region |
| :--- | :--- | :--- |
| Australia | `www.amazon.com.au` | FE |
| Belgium | `www.amazon.com.be` | EU |
| Brazil | `www.amazon.com.br` | NA |
| Canada | `www.amazon.ca` | NA |
| Egypt | `www.amazon.eg` | EU |
| France | `www.amazon.fr` | EU |
| Germany | `www.amazon.de` | EU |
| India | `www.amazon.in` | EU |
| Ireland | `www.amazon.ie` | EU |
| Italy | `www.amazon.it` | EU |
| Japan | `www.amazon.co.jp` | FE |
| Mexico | `www.amazon.com.mx` | NA |
| Netherlands | `www.amazon.nl` | EU |
| Poland | `www.amazon.pl` | EU |
| Singapore | `www.amazon.sg` | FE |
| Saudi Arabia | `www.amazon.sa` | EU |
| Spain | `www.amazon.es` | EU |
| Sweden | `www.amazon.se` | EU |
| Turkey | `www.amazon.com.tr` | EU |
| United Arab Emirates | `www.amazon.ae` | EU |
| United Kingdom | `www.amazon.co.uk` | EU |
| United States | `www.amazon.com` | NA |
