{
  "orders": [
    {
      "id": "o1",
      "product": "p1",
      "qty": 2
    },
    {
      "id": "o2",
      "product": "p2",
      "qty": 1
    },
    {
      "id": "o3",
      "product": "missing",
      "qty": 1
    }
  ],
  "prices": {
    "p1": 3,
    "p2": 5
  }
}