Online payment
In LINE Pay, online payment allows a LINE Pay merchant operating an online service, such as an online shopping mall, to provide customers with the option to pay using LINE Pay and make payments with LINE Pay. LINE Pay online payment has the following advantages.
- Attracts LINE users as merchant's customers.
- Provides customers with LINE Pay payment options.
- Secures merchant's marketing channels through LINE.
To implement online payments with LINE Pay, you need to understand the following first.
Online payment structure
LINE Pay online payment involves three parties. The merchant's customer using LINE, the merchant server (or service), and the LINE Pay server. The merchant server provides LINE Pay as one of the payment options to customers. Also, when a customer pays with LINE Pay, the merchant server communicates with the LINE Pay server using the Online API to perform the necessary operations. The following diagram shows what each party does during the LINE Pay online payment.
Online payments are implemented in different ways depending on the situation and conditions. Thus, the operational structure and workflow differs slightly. For more information on how to implement LINE Pay online payment by each method, see the following.
- Implement online payment (basic)
- Implement capture-separated payment
- Implement pre-approved payment
- Implement payment without redirection URL information
Online payment process
The LINE Pay online payment process follows the steps below.
| Order | Step | Description |
|---|---|---|
| 1 | Payment request | Requests to make a payment with LINE Pay. When a customer decides to purchase a product or service, the merchant server requests payment to the LINE Pay server, providing the payment information. |
| 2 | LINE Pay authentication | When the LINE Pay server receives a payment request from the merchant server, the server displays the LINE Pay screen on the user terminal for the customer to proceed with LINE Pay authentication. When the customer completes authentication, they move on to the next payment step. |
| 3 | Payment confirmation | Once the customer completes LINE Pay authentication, the merchant server verifies the authentication result and requests payment confirmation to the LINE Pay server. The confirmed payment can go through the capture or void process. |
| 4 | Capture | The merchant server requests a capture to the LINE Pay server. The payment is settled when the capture is completed. Generally, the capture is automatically processed upon payment confirmation. Once the capture is completed, the payment cannot be voided and only a refund can be made. |
The following diagram shows the payment status and processing steps, including void and refund, mentioned in the table above.
