PayU
Accept PayU payments in your online store.
PayU is a trusted online payment solution, allowing secure transactions for customers across various regions. Integrate PayU seamlessly using the emerchantpay PayU API across the supported payment platforms.
| Payment method | Countries/regions | Supported currencies |
|---|---|---|
| Bank transfer | Czech Republic, Poland | CZK, PLN |
Prerequisites
To integrate with PayU, connect to the emerchantpay payment gateway using the emerchantpay PayU API. You should have a working knowledge of web programming languages, HTTP methods in XML and JSON formats, and UTF8 encoding. Use the emerchantpay Payment Gateway SDK libraries with code samples to integrate with the payment gateway in a range of languages.
For a solution that requires less development overhead, accept PayU payments through the emerchantpay Web Payment Form (WPF). Contact your Account Manager and tell them you want to accept PayU through the WPF, and refer to the emerchantpay Payment Gateway API WPF documentation.
1. Create a PayU payment request
To submit a payment using PayU, create a payment request to the emerchantpay payment gateway. Specify payu as the transaction_type.
Example of passing a PayU transaction request:
<payment_transaction>
<transaction_type>payu</transaction_type>
<transaction_id>119643250547501c79d8295</transaction_id>
<usage>40208 concert tickets</usage>
<remote_ip>245.253.2.12</remote_ip>
<return_success_url>http://www.example.com/success</return_success_url>
<return_failure_url>http://www.example.com/failure</return_failure_url>
<notification_url>http://www.example.com/notification</notification_url>
<amount>100</amount>
<currency>PLN</currency>
<customer_email>jsmith@example.com</customer_email>
<billing_address>
<first_name>John</first_name>
<last_name>Smith</last_name>
<address1>45 North Str</address1>
<zip_code>W1T 2QS</zip_code>
<city>London</city>
<country>UK</country>
</billing_address>
</payment_transaction>
2. Receive a response
You will receive a Success or Error response to your payment request.
Example of a Success response:
<payment_response>
<transaction_type>payu</transaction_type>
<status>pending_async</status>
<mode>live</mode>
<transaction_id>119643250547501c79d8295</transaction_id>
<unique_id>44177a21403427eb96664a6d7e5d5d48</unique_id>
<technical_message>Transaction successful!</technical_message>
<message>Transaction successful!</message>
<redirect_url>https://staging.gate.emerchantpay.net/redirect/to_acquirer/649e1ff35c61</redirect_url>
<timestamp>2024-03-25T13:53:06Z</timestamp>
<descriptor>Acme Co.</descriptor>
<amount>100</amount>
<currency>PLN</currency>
<sent_to_acquirer>true</sent_to_acquirer>
</payment_response>redirect_url to redirect your customer to authorise the payment with PayU. See the emerchantpay PayU API documentation for the complete list of PayU response parameters and code samples.
Asynchronous notification
Because the PayU payment transaction is asynchronous, the result of your customer’s payment is sent as a separate HTTP POST notification from the gateway to the notification_url that you supplied with the transaction request.
“transaction_id”: “119643250547501c79d8295”
“terminal_token”: “871bbbd2f9ce1d58dead9848ef5a24ab59a8ee94”
“unique_id”: “44177a21403427eb96664a6d7e5d5d48”
“transaction_type”: “payu”
“status”: “approved”
“signature”: “b74ed54d95589fce6f9d7a229b225fd4a925e9bc”
“amount”: “100”
“funds_status”: “NOT_EXPECTED”status field provides you with information on the outcome of the transaction. See Transaction States for more information about transaction statuses.
Use the signature field to verify that the notification has been sent by the emerchantpay payment gateway. Each session signature is generated by combining the unique_id of the transaction and your API password, and generating a SHA-1 hash function of the combined string.
signature = SHA-1 hash value of <unique_id><API password>
| unique_id | API password | signature |
|---|---|---|
| 26aa150ee68b1b2d6758a0e6c44fce4c | 50fd87e65eb415f42fb5af4c9cf497662e00b785 | c5219b3d385e74496b2b48a549 |
| 3f760162ef57a829011e5e2379b3fa17 | 50fd87e65eb415f42fb5af4c9cf497662e00b785 | 14519d0db2f7f8f407efccc9b099 |
After you have verified the notification state and validity, render an XML page containing the transaction’s unique id to acknowledge that you have received the notification.
Example of a notification reply you use to confirm a notification:<?xml version=”1.0″ encoding=”UTF-8″?>
<notification_echo>
<unique_id>3f760162ef57a829011e5e2379b3fa17</unique_id>
</notification_echo>
3. Test your integration
Before you can accept live payments, you must test your integration in the staging environment.
- Add an item to your cart in your online store.
- Proceed to the checkout page and check out using PayU.
- Follow the redirect link in the response.
- In the payment simulator, follow the instructions to simulate a transaction.
- Complete the order and verify that you are redirected to the order confirmation page.
- Log in to the Gateway Console.
- In the navigation menu, go to Payment transactions.
- Verify that the transaction appears at the top of the list and is successful.
4. Accept live payments
After you have successfully tested your PayU integration, you are ready to move to the production environment and accept live payments. Contact your emerchantpay Account Manager to get your login credentials for the production environment.
