Ecommerce Checkout

1. Introduction

With PayWay eCommerce Checkout, you can easily accept payments on your website or mobile app. This solution lets your customers pay quickly and securely using Credit/Debit Cards, ABA Pay & KHQR (via ABA Mobile or other KHQR-supported banking apps), WeChat Pay or Alipay — to give them a seamless and secure checkout experience.

Common Use Cases

Online shopping – Accept payments for products and services.

Wallet top-ups & digital services – Let users add funds or pay for digital services.

Subscriptions & bills – As a checkout to process recurring payments and utility bills.

On-demand services – Handle payments for food delivery, ride-hailing, and more.

Event bookings – Enable seamless ticket and reservation payments

2. How it works

The customer selects a product or service and clicks "Pay".

They choose a payment method, and a checkout modal appears.

The customer completes payment with their chosen method (credit/debit cards, ABA Pay, KHQR, WeChat Pay, Alipay, or Google Pay).

Once the payment is processed, your system receives a pushback notification with the payment status.

Your system verifies the payment and confirms the order.

Selling on an eCommerce platform? See our eCommerce Checkout Plugins instead!

3. Set up your payment selection UI

To ensure a smooth payment experience, your platform must include UI to accommodate the online payment acceptance. This includes:

A section where customers can choose a payment options they want to pay with.

A "We Accept..." area that shows the payment options you offer.

You must follows PayWay eCommerce checkout guidelines to ensure seamless customer payments.

Web UI Guidelines

To accept payments on your website

Mobile UI Guidelines

To accept payments on your app or web app

4. Integration Steps

Before you start, make sure you have the following:

PayWay Sandbox Account – Register here to test transactions.

Sandbox Merchant ID & API Key—You’ll receive these via email after registering for the sandbox.

To integrate online payments on your website or mobile app, follow these steps:

Create a Payment Transaction

When the customer selects "Pay" and chooses a payment method, call the Create Transaction API to generate a transaction and display it on your platform.

PayWay will respond with a HTML response that contains the checkout interface, which you must render on your website/platform for the customer to complete the payment.

Web

WAP/Mobile

Sample Response (Varies Based on Payment Method):

Payment method responses

Handle Callback URL for payment status updates

Once the customer completes the payment, the details of the transaction and other important information will be sent via return_url URL.
This is an optional field. If left empty, it will default to the merchant profile’s return_url.
If you provide a value, ensure that your domain is whitelisted in your merchant profile.

Your return_url must accept HTTP POST method and Content-Type as application/json.

💡

We highly recommend securing this URL to ensure that only PayWay has access to it.

Sample Pushback Data

{
    "tran_id": "17425401324",
    "apv": "619195",
    "status": "0", 
    "return_params": "xxxxxxxxxx"
}

tran_id string
Transaction ID sent during the initial payment process.

apv string
Transaction approval code.

status string
Payment status

return_params string
Extra information sent to the payment gateway during the payment initiation request.

Verify Payment Status

In addition to verifying the payment status via callback URL, you must also use the Check transaction API to verify payment status as PAID and ensure it was successfully processed.

1. Introduction#

2. How it works#

3. Set up your payment selection UI#

4. Integration Steps#

1. Introduction

2. How it works

3. Set up your payment selection UI

4. Integration Steps