Open Payment Window

This step opens the payment window to proceed with authentication for each payment method. Once the authentication is complete, the result is sent via a POST request to the returnUrl specified during the transaction registration.

Minimum Window Size

To prevent the screen from appearing broken or distorted, please ensure the window meets the minimum size requirements (width * height).

• PC: 720 * 680
• Mobile: 500 * 850

Request

Open the URL obtained from the Transaction Registration API via a browser (GET).

Request URL

GET {Payment Window URL}
Content-type: text/html

Response (Callback to returnUrl)

The following parameters are sent to your returnUrl upon successful authentication.

Parameters

Field Name	Type	Length	Required	Description
resCd	String	4Byte	✅	Response Code (Success: “0000”)
resMsg	String	1000Byte	✅	Response Message
shopOrderNo	String	40Byte		Merchant Order No. Returns the value sent during registration.
authorizationId	String	60Byte		Authorization ID. Required for the Payment Approval Request.
shopValue1	String	64Byte		Field 1, Returns the value sent during registration.
shopValue2	String	64Byte		Field 2, Returns the value sent during registration.
shopValue3	String	32Byte		Field 3, Returns the value sent during registration.
shopValue4	String	32Byte		Field 4, Returns the value sent during registration.
shopValue5	String	64Byte		Field 5, Returns the value sent during registration.
shopValue6	String	64Byte		Field 6, Returns the value sent during registration.
shopValue7	String	64Byte		Field 7, Returns the value sent during registration.