{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "deadline_id": {
      "pattern": "^ddl_[0-7][0123456789abcdefghjkmnpqrstvwxyz]{25}$",
      "type": "string"
    },
    "due_at": {
      "format": "date-time",
      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$",
      "type": "string"
    },
    "reason_code": {
      "maxLength": 64,
      "type": "string"
    },
    "registration_event_id": {
      "pattern": "^evt_[0-7][0123456789abcdefghjkmnpqrstvwxyz]{25}$",
      "type": "string"
    },
    "status": {
      "enum": [
        "registered",
        "rejected"
      ],
      "type": "string"
    }
  },
  "required": [
    "deadline_id",
    "registration_event_id",
    "status",
    "due_at"
  ],
  "type": "object"
}