1. Build Integration for UPI Collect

Collect Flow Integration

The integration consists of the following steps.

1.1

1.2

1.3

1.4

1.5

1.1 Create an Order

Order is an important step in the payment process.

• An order should be created for every payment.
• You can create an order using the Orders API. It is a server-side API call.
• The order_id received in the response should be passed to the checkout.

Sample Code

Order is an important step in the payment process.

• An order should be created for every payment.
• You can create an order using the

  Orders API

  . It is a server-side API call. Know how to

  authenticate

  Orders API.
• The order_id received in the response should be passed to the checkout. This ties the order with the payment and secures the request from being tampered.

API Sample Code

Use this endpoint to create an order using the Orders API.

curl -X POST https://api.razorpay.com/v1/orders
-U [YOUR_KEY_ID]:[YOUR_KEY_SECRET]
-H 'content-type:application/json'
-d '{
   "amount": 100,
   "currency": "MYR",
   "receipt": "qwsaq1",
   "partial_payment": true,
   "first_payment_min_amount": 230,
   "notes": {
     "key1": "value3",
     "key2": "value2"
   }
 }'

1.2 Create a Payment

Create a payment using the API given below after your order is created.

curl -u [YOUR_KEY_ID]:[YOUR_KEY_SECRET] \
-X POST https://api.razorpay.com/v1/payments/create/json \
-H "Content-Type: application/json" \
-d '{
  "amount": 100,
  "currency": "INR",
  "order_id": "order_Ky7GhR2EgoKxOE",
  "email": "gaurav.kumar@example.com",
  "contact": "9090909090",
  "method": "upi",
  "upi":{
      "flow":"collect",
      "vpa":"gauravkumar@okhdfcbank"
  },
  "ip": "192.168.0.103",
  "referer": "http",
  "user_agent": "Mozilla/5.0",
  "description": "Test payment",
  "notes": {
    "note_key": "value1"
  }
}'

Once the payment is successfully created, you will receive a response containing the next array. This array tells you the next steps that you should take to process the payment:

Request Parameters

The payment request for each of the supported payment methods will slightly vary. Know more about the

1.3 Handle Payment Success and Failure

Once the payment is completed by the customer, a POST request is made to the callback_url provided in the payment request. The data contained in this request will depend on whether the payment was a success or a failure of the payment made by the customer.

Success Callback

If the payment made by the customer is successful, the following fields are sent:

• razorpay_payment_id
• razorpay_order_id
• razorpay_signature

{
  "razorpay_payment_id": "pay_29QQoUBi66xm2f",
  "razorpay_order_id": "order_9A33XWu170gUtm",
  "razorpay_signature": "9ef4dffbfd84f1318f6739a3ce19f9d85851857ae648f114332d8401e0949a3d"
}

Failure Callback

If the payment has failed, the callback will contain details of the error. Refer to

1.4 Verify Payment Signature

This is a mandatory step to confirm the authenticity of the details returned to the Checkout form for successful payments.

To verify the razorpay_signature returned to you by the Checkout form:

1. Create a signature in your server using the following attributes:

   • order_id: Retrieve the order_id from your server. Do not use the razorpay_order_id returned by Checkout.
   • razorpay_payment_id: Returned by Checkout.
   • key_secret: Available in your server. The key_secret that was generated from the
     Curlec Dashboard
     .

2. Use the SHA256 algorithm, the razorpay_payment_id and the order_id to construct a HMAC hex digest as shown below:

   HMAC Hex Digest

   copy

   generated_signature = hmac_sha256(order_id + "|" + razorpay_payment_id, secret);
   
     if (generated_signature == razorpay_signature) {
       payment is successful
     }

3. If the signature you generate on your server matches the razorpay_signature returned to you by the Checkout form, the payment received is from an authentic source.

Generate Signature on Your Server

Given below is the sample code for payment signature verification:

RazorpayClient razorpay = new RazorpayClient("[YOUR_KEY_ID]", "[YOUR_KEY_SECRET]");


String secret = "EnLs21M47BllR3X8PSFtjtbd";


JSONObject options = new JSONObject();
options.put("razorpay_order_id", "order_IEIaMR65cu6nz3");
options.put("razorpay_payment_id", "pay_IH4NVgf4Dreq1l");
options.put("razorpay_signature", "0d4e745a1838664ad6c9c9902212a32d627d68e917290b0ad5f08ff4561bc50f");


boolean status =  Utils.verifyPaymentSignature(options, secret);

Post Signature Verification

After you have completed the integration, you can

1.5 Verify Payment Status

You can track the payment status in three ways:

Verify Status from Dashboard

Subscribe to Webhook Events

Poll APIs

To verify the payment status from the Dashboard:

1. Log in to the

   Dashboard

   and navigate to Transactions → Payments.
2. Check if a Payment Id has been generated and note the status. In case of a successful payment, the status is marked as Captured.

Next Steps