Request Parameter Description

Field Name	Type	Description	Required	Example
`title`	String	Order title	No	Payment Order
`order_no`	String	Merchant order number (Max 64 characters, must be unique)	Yes	`P120251222027`
`amount`	BigDecimal	Amount	Yes	`1000`
`currency`	String	Payment currency	Yes	`USDT`
`payment_method`	String	Payment method code (see payment method list)	Yes	`USDT_ERC20`
`callback_url`	String	Full callback notification URL	Yes	`https://xxx/xxx`
`return_url`	String	Redirect URL after payment completion	Yes	`https://xxx/xxx`
`return_type`	String	Result return method. PLATFORM: Platform checkout page URL, CUSTOM: Custom checkout page data (qr_code), Default: PLATFORM	No	`CUSTOM`
`user_ip`	String	User IP	Yes	`127.0.0.1`
`expire_seconds`	int	Order expiration time, in seconds	No	3600
payer	object	Payer user information	Yes
`user_id`	String	Unique user identifier (account or ID)	Yes	`test001`

Response Parameter Description

Field Name	Type	Description
`code`	integer	Success response code, see error codes for other exceptions
`msg`	String	Description
data	object
`trade_no`	String	Platform transaction number
`order_no`	String	Merchant order number
`status`	String	Current pay-in order status (please check status code description)
`message`	String	Response description
`amount`	String	Order amount
`due_pay_amount`	number	Amount due
`currency`	String	Order currency
`fee`	String	Transaction fee
details	object
`redirect_url`	String	Checkout page URL
`qr_code`	String	QR code