{ "$schema": "http://json-schema.org/draft-07/schema#", "title": "exemptionItem", "properties": { "exempt_from": { "description": "Exemption valid from.", "type": "string", "format": "date" }, "exempt_to": { "description": "Exemption valid to.", "type": "string", "format": "date" } }, "required": [ "exempt_from" ] }