VerificationDocumentSubtype

Some documents may have a subtype of the document. Most often those will be under type ID_CARD.
VISA - Visa
TAX_ID - Tax ID
STUDENT_ID - Student ID
SOCIAL_SECURITY_ID - Social Security ID
SERVICES_ID - Services ID
RESIDENT_PERMIT_ID - Resident Permit ID
REGULAR_DRIVING_LICENSE - Regular Driving License
PUBLIC_SAFETY_ID - Public Safety ID
PROFESSIONAL_ID - Professional ID
PASSPORT_CARD_ID - Passport Card ID
OTHER_ID - Other, not categorized ID
NATIONAL_ID - National ID
MULTI_PURPOSE_ID - Multi Purpose ID
MILITARY_ID - Military ID
LEARNING_DRIVING_LICENSE - Learning Driving License
HEALTH_ID - Health ID
E_PASSPORT - E-Passport
ELECTORAL_ID - Electoral ID
CUS_PD - Custom pendion document, subtype to the CUSTOM ID type
CUS_LTC - Custom lease tenant agreement, subtype to the CUSTOM ID type
CUS_HI - Custom Holding ID, subtype to the CUSTOM ID type
CUS_CD - Court Document, subtype to the CUSTOM ID type
CUS_ADDR - Custom Address document, subtype to the CUSTOM ID type
CONSULAR_ID - Consular ID
CITIZENSHIP_ID - Citizenship ID

string

Possible values: [VISA, TAX_ID, STUDENT_ID, SOCIAL_SECURITY_ID, SERVICES_ID, RESIDENT_PERMIT_ID, REGULAR_DRIVING_LICENSE, PUBLIC_SAFETY_ID, PROFESSIONAL_ID, PASSPORT_CARD_ID, OTHER_ID, NATIONAL_ID, MULTI_PURPOSE_ID, MILITARY_ID, LEARNING_DRIVING_LICENSE, HEALTH_ID, E_PASSPORT, ELECTORAL_ID, CUS_PD, CUS_LTC, CUS_HI, CUS_CD, CUS_ADDR, CONSULAR_ID, CITIZENSHIP_ID]