# X-Musement-Market header

A *market* is a modified catalog of activities and prices based on the contractual agreement with the [Strategic partnerships team](mailto:business@musement.com). Partners are given a *market code* which can be used with the `X-Musement-Market` header to view the customized catalog. Below is an example call using the header:


```bash
curl -X GET '{baseUrl}/activities' \
-H 'X-Musement-Application: {applicationValue}' \
-H 'X-Musement-Market: {marketCode}' \
-H 'X-Musement-Version: 3.4.0' \
-H 'Authorization: Bearer {accessToken}'
```

When the header is absent, the API returns the "public" catalog seen on [musement.com](https://www.musement.com/us).

Partners are expected to include the `X-Musement-Market` header with their own *market code* for all endpoints in order to receive the correct activities and prices based on the agreement.

If an invalid header value is used, the API returns a 400 status code response:


```json
{
	"code": "-1",
	"message": "Unknown market code was provided."
}
```