ใบสั่งซื้อ

{
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "po_number": { "type": "string", "description": "Purchase order number" },
    "po_date": { "type": "string", "description": "PO date" },
    "vendor": { "type": "string", "description": "Vendor name" },
    "delivery_date": { "type": "string", "description": "Requested delivery date" },
    "total": { "type": "number", "description": "PO total" },
    "line_items": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "sku": { "type": "string" },
          "name": { "type": "string" },
          "quantity": { "type": "number" },
          "unit_price": { "type": "number" }
        }
      }
    }
  },
  "required": ["po_number"]
}