✅Service launch checklist

Use this checklist to self-diagnose your payment service before launch.

💡 Before deploying your service to production, check the details that are easy to miss to prevent production failures.

✍️ All services

• Configure i'mport console -> system settings with production settings

  • Set PG Merchant ID / PG Secret.

  • Set test mode to OFF.

  • Set webhook (notification) URL.

  • Set IP security settings.

  • Check the credit card usage/merchant interest payment installment settings.

  • Set m_redirect_URL (for when using redirect mode (mobile/PayPal)).

  • Set confirm_URL (for when using the service - must request to i'mport in advance)

• Successful payment window call and result processing

  • The payment window for the specified PG opened.

  • After payment, the result is successfully received via callback/via 302 redirect to m_redirect_url.

  • When the payment is completed (paid/canceled), the processing result is successfully received via webhook.

  • The received webhook data (result) is successfully updated in the system.

  • Responded to webhook with HTTP 200.

  • There is logic to handle the case when the result cannot be verified due to a communication error during payment/cancellation.

  • There is a reprocessing logic for each payment/cancellation failure reason. (Example: A failed cancellation can be reattempted.)

  • Provides or can instruct about the function to check the transaction details for payment/cancellation.

  • Can check the data for key items. (Approval number/imp_uid/merchant_uid)

  • There is logic to process a duplicate result that is received.

⚠️ Check the following checklists by payment method.

💳 Credit card

• Pass all credit card company reviews, and complete approval and full/partial cancellation tests.

• Verify that installment and interest-free settings are shown correctly in the payment window.

• Successfully process payment/cancellation with check/credit/foreign credit cards (foreign credit cards require a separate contract).

• Set tax free/taxable amount is displayed correctly in the PG's admin/sales slip.

• For subscription payment, billing key is issued and the payment is completed successfully.

• If payment fails, the corresponding billing key can be deleted and reissued for a new payment info to make a payment.

💵 Virtual account

• Can obtain the bank name using the bank code of the issued virtual account.

• Can send the issued virtual account to the payer and then delete it.

• Can receive the deposit result and update it in the system.

• Can update a deposit cancellation in the system.

• Can request and process a refund when a refund is requested.

💸 Account transfer

• Can obtain the bank name using the bank code used for withdrawal and transfer.

• Can request and process a refund when a refund is requested.

📱Mobile phone

• Pass all phone carrier reviews and complete approval and full/partial cancellation tests.

  (Partial cancellation is not supported except for Inicis and KCP (separate agreement required))

• Approved transactions can only be cancelled during the month when the transaction occurred.

🙋 Identity verification

• Sign an agreement for foreigner status check, if needed.

🧾 Cash receipt

• Can search for and cancel an issued receipt.

• Can process i'mport transactions and other transactions separately.

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⚠️ Test all test cases in the target payment environment.

OS / Browser	IE / Edge	Chrome	Safari	FireFox	Whale	Portal WebView	SNS WebView
Windows
Mac OS
Android
iOS

• Create info.plist to link to external PG apps in iOS.

• Pass app_scheme to return to the merchant app after payment.