the nature/type of the document
{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "https://raw.githubusercontent.com/api-evangelist/amadeus-reservations/refs/heads/main/json-schema/flight-order-management-document-type-schema.json", "title": "DocumentType", "description": "the nature/type of the document", "type": "string", "enum": [ "VISA", "PASSPORT", "IDENTITY_CARD", "KNOWN_TRAVELER", "REDRESS" ], "example": "VISA" }