POSTrequest to the
/oauth/tokenendpoint. The payload to be sent with the request differs based on the kind of API credentials you're requesting the access token for and will be detailed case by case in the following sections.
market:1234— all the resources (e.g. SKUs, prices, stock items) that you fetch are automatically filtered.
stock_location:4567— the stock is restricted to the SKUs available in that specific stock location.