Optional
country2 letter country code
Optional
extendedLine 2 of the Address (eg. suite, apt #, etc.)
Optional
givenGiven name associated with the address.
Optional
line3Line 3 of the Address (eg. suite, apt #, etc.)
Optional
localityCity name
Optional
phoneThe phone number associated with the address
Note: Only numbers. Remove dashes, parentheses and other characters
Optional
postalZip code or equivalent is usually required for countries that have them.
For a list of countries that do not have postal codes please refer to http://en.wikipedia.org/wiki/Postal_code
Optional
regionEither a two-letter state code (for the US), or an ISO-3166-2 country subdivision code of up to three letters.
Optional
streetLine 1 of the Address (eg. number, street, etc)
Optional
surnameSurname associated with the address.
Postal address for 3D Secure flows.
Link
https://braintree.github.io/braintree_ios/current/Classes/BTThreeDSecurePostalAddress.html