Simple Payment Management Service

This service allows merchants to easily manage Simple Payment functions.

Note

• A OneTimeAccessKey is required to use this service.
• The following pages are provided: Payment Method Management, Payment Method Registration, Password (PIN) Modification, and Sales Slip.

Payment Method Management

Call Management Page

This page allows Simple Payment members to view their registered payment methods or add new ones.

Request

Request URL

GET https://{API Domain}/easypay/user/paymentMethodManagement.do?oneTimeAccessKey={OneTimeAccessKey}&returnUrl={Merchant Return URL}
Content-type: text/html

Parameters

Field Name	Type	Length	Required	Description
oneTimeAccessKey	String	60Byte	✅	OneTimeAccessKey
returnUrl	String	256Byte	✅	Merchant Return URL (HTTPS Only, URL Encoded)

Payment Method Registration

Call Registration Page

This page is used to register a new payment method for Simple Payment. After registration is complete, the response values are sent to the returnUrl via POST method.

Request

Request URL

GET https://{API Domain}/easypay/user/paymentMethodReg.do?oneTimeAccessKey={OneTimeAccessKey}&returnUrl={Merchant Return URL}&payMethodTypeCode={Payment Method Code}
Content-type: text/html

Parameters

Field Name	Type	Length	Required	Description
oneTimeAccessKey	String	60Byte	✅	OneTimeAccessKey
returnUrl	String	256Byte	✅	Merchant Return URL (HTTPS Only, URL Encoded)
payMethodTypeCode	String	2Byte		Payment Method Code to Register Credit Card: "11", Account: "21" If Null, follows KICC default settings.

Response (POST to returnUrl)

Parameters

Field Name	Type	Length	Required	Description
resCd	String	4Byte	✅	Result Code (Success: “0000”)
resMsg	String	1000Byte	✅	Result Message
payMethodTypeCode	String	2Byte		See Payment Method Codes
payMethodDetailCode	String	3Byte		Card Codes or Bank Codes

PIN Modification

Call PIN Modification Page

This page allows users to change their Simple Payment PIN (Password).

Request

Request URL

GET https://{API Domain}/easypay/user/passwordModification.do?oneTimeAccessKey={OneTimeAccessKey}&returnUrl={Merchant Return URL}
Content-type: text/html

Parameters

Field Name	Type	Length	Required	Description
oneTimeAccessKey	String	60Byte	✅	OneTimeAccessKey
returnUrl	String	256Byte	✅	Merchant Return URL (HTTPS Only, URL Encoded)

Response

Parameters

Field Name	Type	Length	Required	Description
resCd	String	4Byte	✅	Result Code (Success: “0000”)
resMsg	String	1000Byte	✅	Result Message

Sales Slip

Call Sales Slip Page

This page displays the sales slip (receipt) for a Simple Payment transaction.

Request

Request URL

GET https://{API Domain}/easypay/payment/receipt.do?oneTimeAccessKey={OneTimeAccessKey}&returnUrl={Merchant Return URL}&pgCno={PG Transaction ID}
Content-type: text/html 

Parameters

Field Name	Type	Length	Required	Description
oneTimeAccessKey	String	60Byte	✅	OneTimeAccessKey
pgCno	String	20Byte	✅	PG Transaction ID
returnUrl	String	256Byte	✅	Merchant Return URL (HTTPS Only, URL Encoded)