Open Authentication Window

This step invokes the EasyPay Simple Payment authentication window to proceed with user authentication. Upon completion, the authentication result is sent to the returnUrl specified during transaction registration via the POST method.

Request

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

Request URL

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

Response (POST to returnUrl)

Parameters

Field Name	Type	Length	Required	Description
resCd	String	4Byte	✅	Result Code (Success: “0000”)
resMsg	String	1000Byte	✅	Result Message
shopTransactionId	String	60Byte		Merchant Transaction ID (Returns the value sent in registration)
shopOrderNo	String	40Byte		Merchant Order No. (Returns the value sent in registration)
authorizationId	String	60Byte		Auth Transaction ID (Required for Payment Approval)
shopParameter	String	4000Byte		Custom Data (Returns the value sent in registration)