API REFERENCE

UnionPay Online Payments

YabandPay documentation·Updated Oct 26, 2026

Parameter	Type	Description	Required
user	String	Cashier account UID	Required
sign	String	Signature	Required
method	String	v3.CreatePayments	Required
time	Long	Timestamp	Required

Parameters

Parameter	Type	Description	Required
pay_method	String	online	Required
sub_pay_method	String	UnionPayWap	Required
order_id	String	Merchant order ID	Required
amount	String	Numeric amount. For example, € 24.99 must be written as 24.99; euro amount>=1	Required
currency	String	ISO 4217 currency code, for example EUR or CHF	Required
description	String	Order description	Required
demo	String	Custom field	Optional
timeout	String	Expiration time in minutes (0-1440)	Required
redirect_url	String	Redirect URL after payment	Optional
notify_url	String	Asynchronous notification URL after payment	Required

Signature example:

Sorted parameters concatenated into a URL-style query string

"amount=1&currency=EUR&demo=test&description=YabandPay test&method=v3.CreatePayments&notify_url=https://www.yabandpay.com/notify&order_id=20248416516546816541&pay_method=online&redirect_url=https://www.yabandpay.com&sub_pay_method=UnionPayWap&time=1546588959&timeout=0&user=YOUR_CASHIER_UID"

Sign stringA using secret_key

The resulting signature is:

"YOUR_SIGNATURE"

Request example:

{
    "user": "YOUR_CASHIER_UID",
    "sign": "YOUR_SIGNATURE",
    "method": "v3.CreatePayments",
    "time": 1546588959,
    "data": {
        "description": "YabandPay test",
        "timeout":"0",
        "pay_method": "online",
        "sub_pay_method": "UnionPayWap",
        "order_id": "YOUR_ORDER_ID",
        "amount": "1",
        "currency": "EUR",
        "redirect_url": "https://www.yabandpay.com",
        "notify_url": "https://www.yabandpay.com/notify",
        "demo": "test"
    }
}

Response example:

{
    "status": true,
    "code": "200",
    "data": {
        "order_id": "YOUR_ORDER_ID",
        "trade_id": "d80e6ed6-e5e1-04f2-42b9-6aa18e74c3ea",
        "amount": "1.00",
        "currency": "EUR",
        "url": "https://pay.yabandpay.com/payments/callback/order/ZDgwZTZlZDYtZTVlMS0wNGYyLTQyYjktNmFhMThlNzRjM2Vh",
        "state": "processing"
    },
    "message": ""
}

Additional information:

Response result:

A successful request returns "status": true.
A failed request returns "status": false.

We strongly recommend using both Query Order and Asynchronous Notifications to keep payment statuses accurate and up to date.

Response codes:

Status	Code	Message
true	200	Success
false	-1000	Internal error
false	-3001	Required field is missing
false	-403	The signature Error
false	-4011	Not support the payment method