The two-letter [ISO 3166-1 alpha-2](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2) country code.
number
string
The tax ID number (TIN) of the organization or individual.
type
string
The TIN type depending on the country where it was issued. Provide only for countries that have multiple tax IDs, such as Sweden, the UK, or the US. For example, provide **SSN**, **EIN**, or **ITIN**