{
  "type": "object",
  "properties": {
    "invoice_reference": {
      "type": "string",
      "description": "The invoice reference number printed on the invoice"
    },
    "order_reference": {
      "type": "string",
      "description": "The order reference the invoice relates to"
    },
    "vehicle_registration": {
      "type": "string",
      "description": "The registration plate of the delivery vehicle"
    },
    "received_by": {
      "type": "string",
      "description": "The name of the person who received the delivery"
    },
    "total_due": {
      "type": "string",
      "description": "The total amount due on the invoice, including the currency symbol"
    }
  },
  "required": [
    "invoice_reference",
    "order_reference",
    "vehicle_registration",
    "received_by",
    "total_due"
  ]
}