Open Authentication Window

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

info

• For online non-face-to-face payments, please refer to the VAN Payment > Simple Payment Guide.

Request

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 Approval Request)
shopParameter	String	4000Byte		Custom Data (Returns the value sent in registration)