post https://api.fastspring.com/quotes
Create a new quote with an open status.
USA and Canada: To allow FastSpring to accurately calculate taxes in the USA and Canada a valid postal code is mandatory (postal code is optional in all other countries). You can also optionally enter a valid region name or code, but it must match the postal code region. If the “region” field is left empty, it will be populated with the region associated with the postal code.