Before beginning programming the more complicated sections of Booking.com Supply API, a provider should first be familiarized with how to retrieve the following Booking.com system information categories relevant for their project:
- countries — generates a list of country names and codes used in the API
- countrycurrencies — generates a list of country codes with the currency codes the provider must use for each.
- creditcards — generates a list of credit card names and their codes used in the API (both B.XML and OTA codes in use)
- currencies — generates a list of currency names and their codes used in the API