enum TaxInfoType
The kind of a tax identifier. The country that issues it follows from the kind.
ein— US Employer Identification Number, stored as XX-XXXXXXX.ssn— US Social Security Number, stored as XXX-XX-XXXX.bn— Canadian Business Number, stored as nine digits.sin— Canadian Social Insurance Number, stored as XXX-XXX-XXX.cn_id— Chinese Resident Identity Card number of a person, stored as its 18 characters, the last a digit or X.rfc— Mexican RFC (Federal Taxpayer Registry number) of a company, stored as its 12 characters.