LinkAja QRIS Integration Guide

The basic integration process of the LinkAja channel will be explained below

Integration Step

1. Post Data Transaction to Faspay

2. Display QR Code

3. Callback/Return URL

4. Payment Notification

1. Post Data Transaction

Post-data transactions should be done from the merchant backend, the detailed API reference can be found Here

This is an example of a post-data transaction sample code for the LinkAja QRIS channel:

A. Post Data Transaction Request

XML Sample Code

<faspay>
	<request>Purchased Details Transmission</request>
	<merchant_id>99999</merchant_id>
	<merchant>FASPAY STORE</merchant>
	<bill_no>849389422312</bill_no>
	<bill_reff>Payment</bill_reff>
	<bill_date>2023-10-10 09:19:00</bill_date>
	<bill_expired>2023-10-11 12:10:10</bill_expired>
	<bill_desc>Payment #12345678</bill_desc>
	<bill_currency>IDR</bill_currency>
	<bill_gross>0</bill_gross>
	<bill_tax>0</bill_tax>
	<bill_miscfee>0</bill_miscfee>
	<bill_total>10000</bill_total>
	<cust_no>1</cust_no>
	<cust_name>Faspay Agus Priyono</cust_name>
	<cust_lastname></cust_lastname>
	<payment_channel>715</payment_channel>
	<pay_type>1</pay_type>
	<bank_userid></bank_userid>
	<msisdn>081234567891</msisdn>
	<email>[email protected]</email>
	<terminal>10</terminal>
	<billing_name>payment item faspay</billing_name>
	<billing_lastname>0</billing_lastname>
	<billing_address>jalan pintu air raya</billing_address>
	<billing_address_city>Jakarta Pusat</billing_address_city>
	<billing_address_region>DKI Jakarta</billing_address_region>
	<billing_address_state>Indonesia</billing_address_state>
	<billing_address_poscode>10710</billing_address_poscode>
	<billing_msisdn></billing_msisdn>
	<billing_address_country_code>ID</billing_address_country_code>
	<receiver_name_for_shipping>Faspay Agus</receiver_name_for_shipping>
	<shipping_lastname></shipping_lastname>
	<shipping_address>jalan pintu air raya</shipping_address>
	<shipping_address_city>Jakarta Pusat</shipping_address_city>
	<shipping_address_region>DKI Jakarta</shipping_address_region>
	<shipping_address_state>Indonesia</shipping_address_state>
	<shipping_address_poscode>10710</shipping_address_poscode>
	<shipping_msisdn>08766688686</shipping_msisdn>
	<shipping_address_country_code>ID</shipping_address_country_code>
	<item>
		<id>123</id>
		<product>Glass Plastic</product>
		<qty>1</qty>
		<amount>10000</amount>
		<payment_plan>01</payment_plan>
		<merchant_id>99999</merchant_id>
		<tenor>00</tenor>
		<type>Furniture</type>
		<url>http://localhost:8088/index</url>
		<image_url>https://cdn.mos.cms.futurecdn.net/Mffc35PH77Dq7USrHb4qNm-1200-80.jpg</image_url>
	</item>
	<item>
		<id>234</id>
		<product>Plastic Bucket</product>
		<qty>1</qty>
		<amount>10000</amount>
		<payment_plan>01</payment_plan>
		<merchant_id>99999</merchant_id>
		<tenor>00</tenor>
		<type>Furniture</type>
		<url>http://localhost:8088/kredivo</url>
		<image_url>https://cdn.mos.cms.futurecdn.net/Mffc35PH77Dq7USrHb4qNm-1200-80.jpg</image_url>
	</item>
	<reserve1>0</reserve1>
	<reserve2></reserve2>
	<signature>0d8a326853f3090251fb81b1a56f5c4d5b5f2639</signature>
</faspay>

JSON Sample Code

B. Post Data Transaction Response

Response parameters are the parameters sent by the Faspay system in response to requests made by the merchant system. If any of these parameters do not match or contain incorrect values, the transaction will be rejected by Faspay's system.

For the LinkAja QRIS payment method, there are 2 types of transaction models:

• Direct Type

• Redirect Type

Here below are 2 different responses based on the transaction type model.

Parameter	Data Type	M/O/C	Description
response	Alphanumeric (50)	Mandatory	Response Name
trx_id	Numeric (16)	Mandatory	Transaction ID (Issued/generated by Faspay (Media Indonusa)) Notes: Unique Transaction ID for 1 day or as long as it hasn't been paid and hasn't expired
merchant_id	Numeric (5)	Mandatory	Merchant Code
merchant	Alphanumeric (32)	Mandatory	Merchant Name
bill_no	Alphanumeric (32)	Mandatory	Order Number
bill_items	Array
id	Numeric	Optional	ID product
product	Alphanumeric	Optional	Product name
amount	Numeric	Optional	Nominal product price
merchant_id	Numeric (5)	Mandatory	Merchant Code
qty	Numeric	Optional	Quantity of item
payment_plan	Numeric	Optional	Payment code 1: Full Settlement 2: Installement
tenor	Numeric	Optional	Installment Tenor 00: Full Payment 03: 3 months 06: 6 months 12: 12 months
type	Alphanumeric	Optional	Item type
url	Alphanumeric	Optional	Item Link
image_url	Alfaumeric	Optional	Image item Link
response_code	Numeric (2)	Mandatory	Response Code 00 Success
response_desc	Alphanumeric (32)	Mandatory	Response Code Description
web_url	Alphanumeric	Conditional	Used if the transaction model uses direct type, displaying only QR code in the browser.
qr_content	Alphanumeric	Conditional	Data will be encoded in a QR code generated or processed. Notes: Use this if the transaction is direct type.
redirect_url	Alphanumeric	Mandatory	Link to Faspay landing page containing QR image

Sample Code for Direct Type

Response Post Data (XML Code)

<?xml version="1.0" encoding="UTF-8"?>
<faspay>
	<response>Purchase Details Transmission</response>
	<trx_id>9999971571609433</trx_id>
	<merchant_id>99999</merchant_id>
	<merchant>FASPAY DEMO</merchant>
	<bill_no>849389422312</bill_no>
	<bill_items>
		<id>123</id>
		<product>Glass Plastic</product>
		<qty>1</qty>
		<amount>10000</amount>
		<payment_plan>01</payment_plan>
		<merchant_id>99999</merchant_id>
		<tenor>00</tenor>
		<type>Furniture</type>
		<url>http://localhost:8088/index</url>
		<image_url>https://cdn.mos.cms.futurecdn.net/Mffc35PH77Dq7USrHb4qNm-1200-80.jpg</image_url>
	</bill_items>
	<bill_items>
		<id>234</id>
		<product>Plastic Bucket</product>
		<qty>1</qty>
		<amount>10000</amount>
		<payment_plan>01</payment_plan>
		<merchant_id>99999</merchant_id>
		<tenor>00</tenor>
		<type>Furniture</type>
		<url>http://localhost:8088/kredivo</url>
		<image_url>https://cdn.mos.cms.futurecdn.net/Mffc35PH77Dq7USrHb4qNm-1200-80.jpg</image_url>
	</bill_items>
	<response_code>00</response_code>
	<response_desc>Success</response_desc>
	<web_url>https://debit-urgent-staging.faspay.co.id/__assets/qr/linkaja/99999-9999971571609433.png</web_url>
	<qr_content>00020101021226660014ID.LINKAJA.WWW011893600911002140400102152106140914040010303UME51450015ID.OR.GPNQR.WWW02150000000000000000303UME520454995802ID5906Faspay6007Jakarta61051071062200116999997156141292153033605403100630497F4</qr_content>
</faspay>

Response Post Data (JSON Code)

Sample Code Response Post Data (Redirect Type)

Response Post Data (XML)

<?xml version="1.0" encoding="UTF-8" ?>
<faspay>
        <response> Purchase Details Transmission</response>
        <trx_id>9999971150758059</trx_id>
        <merchant_id>99999</merchant_id>
        <merchant>FASPAY DEMO</merchant>
        <bill_no>163b4ef032520a7.07128111</bill_no>
        <bill_items>
	        <id>01</id>
	        <product>Glass Plastic Prem</product>
	        <qty>1</qty>
	        <amount>1000000</amount>
	        <payment_plan>01</payment_plan>
	        <merchant_id>99999</merchant_id>
	        <tenor>00</tenor>
	        <type>Furniture</type>
	        <url>http://localhost</url>
	        <image_url>https://cdn.mos.cms.futurecdn.net/Mffc35PH77Dq7USrHb4qNm-1200-80.jpg</image_url>
         </bill_items>
         <response_code>00</response_code>
         <response_desc>Success</response_desc>
         <redirect_url>https://web.faspay.co.id/pws/100003/2830000010100000/92fb23821115e920a979b3c28ea969d98ac76497?trx_id=9999971150758059&merchant_id=99999&bill_no=163b4ef032520a7.07128111</redirect_url>
</faspay>

Response Post Data (JSON)

2 Display QR Code

Here are two ways to display the QR Code:

• Redirect Type: To display the QR Code on Faspay's page, redirect using the redirect_url obtained from the Post Data Transaction Response (in JSON format), or refer to the detailed API reference for more information Here

• Direct Type: To display the QR Code on the merchant's page, if the frontend is HTML, you can use the web_url retrieved from the post-data transaction within an image tag like this: <img src="[web_url]">. Alternatively, you can display it on a similar component without downloading. However, if the front end does not support this scenario, you should download and display the QR code image from that URL on the front end.

3 Callback/Return URL

After the customer completes the payment via LinkAja's website, the LinkAja website automatically redirects the customer to the Callback/Return URL. Please provide the URL and make sure it's already registered on the Faspay system. For details, reference can be found Here

4 Payment Notification

Payment notification from Faspay to the Merchant backend will also be triggered in the event of transaction status getting updated, to ensure the merchant is securely informed. Please provide the URL and make sure it's already registered on the Faspay system

The detailed API reference can be found here