{
  "article_id": "A023",
  "synthetic": true,
  "schema": {
    "properties": {
      "order_id": {
        "type": "string"
      },
      "region": {
        "type": "string"
      }
    },
    "required": [
      "order_id"
    ]
  },
  "expected": [
    "ok",
    "missing_property",
    "extra_property",
    "required_mismatch",
    "variadic_unsupported"
  ]
}