# Extra Data

Sử dụng trong trường hợp đối tác muốn bổ sung thêm thông tin cho 01 giao dịch. 

Hệ thống VinID sẽ đọc theo format sau: 

```
{
    "partner_code": "YOUR-PARTNER-CODE-HERE",
    // thông tin thêm mà đối tác muốn bổ sung cho giao dịch.
    "order_info": "your-json-string"
}
```

Ví dụ:

```
// request body với extra data dạng array key-value
{
    "callback_url": "your-callback-url",
    "description": "Mua hàng tại quầy",
    "order_amount": "10000",
    "order_currency": "VND",
    "order_reference_id": "DOITAC-DON-01",
    "pos_code": "POS-CUA-HANG-01",
    "service_type": "PURCHASE",
    "store_code": "CUA-HANG-01",
    "extra_data": {
        "partner_code": "MERCHANT-01",
        "order_info": "[{\"topping\":\"pho mai\",\"ship_method\":\"ship b\u1eb1ng m\u00e1y bay\"}]"
    }
}
// request body với extra data dạng object
{
    "callback_url": "your-callback-url",
    "description": "Mua hàng tại quầy",
    "order_amount": "10000",
    "order_currency": "VND",
    "order_reference_id": "DOITAC-DON-01",
    "pos_code": "POS-CUA-HANG-01",
    "service_type": "PURCHASE",
    "store_code": "CUA-HANG-01",
    "extra_data": {
        "partner_code": "MERCHANT-01",
        "order_info": "{\"customer\":\"joker\",\"sent_to\":\"batman\",\"is_a_bomb\":true}"
    }
}
```


---

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```
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