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KakaoPay Redirect Component

Add KakaoPay to an existing Components integration.

If you are using Android Components v5.0.0 or later:

This payment method requires no additional configuration.

Follow the Components integration guide and use the following module and Component names:

To import the module: instant
To launch and show the Component: InstantPaymentComponent

If you have an existing Android Components integration, you can use our Redirect Component to redirect the shopper to the KakaoPay website where they can complete the payment.

When making an KakaoPay payment, you need to:

Include KakaoPay in the list of available payment methods.
Handle the redirect.

Requirements

Requirement	Description
Integration type	Make sure that you have built an Advanced flow Android Components integration.
Setup steps	Before you begin, add KakaoPay in your Customer Area.

Show KakaoPay in your payment form

Include KakaoPay in the list of available payment methods. You do not need to collect any information from the shopper in your payment form.

Specify in your /paymentMethods request:
- countryCode: KR
- amount.currency: KRW
- amount.value: The value of the payment.

The response contains paymentMethod.type: kakaopay.

We provide logos for KakaoPay which you can use on your payment form. For more information, refer to Downloading logos.

Make a payment

When the shopper proceeds to pay, you need to:

From your server, make a /payments request, specifying:
- paymentMethod.type: Set this to kakaopay.
- returnUrl: URL to where the shopper should be redirected back to after they complete the payment. This URL can have a maximum of 1024 characters. Get this URL from the Component in the RedirectComponent.getReturnUrl(context).
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In the  /payments response, note the `action` object. This contains the information needed to redirect the shopper.
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Pass the action object to your client app.

Handle the redirect

Use the Redirect Component to redirect the shopper to KakaoPay.
After the shopper returns to your app, make a POST /payments/details request from your server, providing:
- details: The actionComponentData.details object from the Redirect Component.

You receive a response containing:

resultCode: Use this to present the payment result to your shopper.
pspReference: Our unique identifier for the transaction.

Present the payment result

Use the resultCode that you received in the /payments/details response to present the payment result to your shopper.

The resultCode values you can receive for KakaoPay are:

resultCode	Description	Action to take
Authorised	The payment was successful.	Inform the shopper that the payment has been successful.
Cancelled	The shopper cancelled the payment while on KakaoPay's website.	Ask the shopper whether they want to continue with the order, or ask them to select a different payment method.
Error	There was an error when the payment was being processed.	Inform the shopper that there was an error processing their payment. The response contains a `refusalReason`, indicating the cause of the error.
Pending or Received	The shopper has completed the payment but the final result is not yet known.	Inform the shopper that you have received their order, and are waiting for the payment to be completed. To know the final result of the payment, wait for the AUTHORISATION webhook.
Refused	The payment was refused by the KakaoPay.	Ask the shopper to try the payment again using a different payment method.

If the shopper closed the browser and failed to return to your website, wait for webhooks to know the outcome of the payment. The webhooks you can receive for KakaoPay are:

eventCode	success field	Description	Action to take
AUTHORISATION	false	The transaction failed.	Cancel the order and inform the shopper that the payment failed.
AUTHORISATION	true	The shopper successfully completed the payment.	Inform the shopper that the payment has been successful and proceed with the order.
OFFER_CLOSED	true	The shopper did not complete the payment.	Cancel the order and inform the shopper that the payment timed out.

Recurring payments

KakaoPay supports recurring transactions. To make recurring transactions, you need to:

Create a shopper token.
Use the token to make future payments for the shopper.

Create a token

To create a token, include in your /payments request:

storePaymentMethod: true
shopperReference: Your unique identifier for the shopper.

This triggers the recurring flow, where the shopper logs in to their Kakao account, then confirms the recurring transaction.

When the payment has been settled, you receive a webhook containing:

eventCode: RECURRING_CONTRACT
originalReference: The pspReference of the initial payment.
pspReference: This is the token that you need to make recurring payments for this shopper.

Make sure that your server is able to receive RECURRING_CONTRACT as part of your standard webhooks. You can enable the RECURRING_CONTRACT event code in the webhook settings page.

Make a payment with a token

To make a payment with the token, include in your /payments request:

paymentMethod.storedPaymentMethodId: The pspReference from the RECURRING_CONTRACT webhook.

You can also get this value using the /listRecurringDetails endpoint.
shopperReference: The unique shopper identifier that you specified when creating the token.
shopperInteraction: ContAuth
recurringProcessingModel: Use Subscription for a series of transactions following a fixed time interval or UnscheduledCardOnFile for contracts with non-fixed time interval.

Test and go live

To test successful KakaoPay live payments, you need to use a real mobile number registered with a KakaoPay account.

If you are encountering issues with testing KakaoPay payments, contact our Support Team.

Check the status of KakaoPay test payments in your Customer Area > Transactions > Payments.

Before you can accept live KakaoPay payments, you need to submit a request for KakaoPay in your live Customer Area.