> ## Documentation Index > Fetch the complete documentation index at: https://razorpay-60c89f9a-mintlify-audit-missing-sections-1778528421.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # 3DS2 Migration Guide for Existing S2S Cards Integration > If you integrated with our S2S APIs before October 15, 2022, you must make the following changes to your integration to accept card payments with 3DS2 authentication protocol. **Watch Out!** You must have a PCI compliance certificate to get this feature enabled on your account. ## 3DS2 Authentication 3DS2 is an authentication protocol, the successor of 3DS1, that enables businesses and payment providers to send additional information (such as customer device or browser data) to verify the transaction's authenticity. Razorpay integration is compliant with the 3DS2 protocol. **Know more**: Razorpay supports [3DS2 transactions](/payments/payment-gateway/s2s-integration/payment-methods/cards/3ds2.0). The customer's bank evaluates the transaction for risk and decide on the payment flow. * **Frictionless Flow**: This flow is activated if the bank determines that the transaction is from a trusted device and allows the payment to go through without any additional authentication from the customer. Currently, this would not be applicable in India for domestic payments as RBI mandates OTP-based authentication. For international payments, this flow is viable. * **Challenge Flow**: This flow is activated if the bank determines that the transaction is not from a trusted device and needs additional information. The customer needs to perform additional authentication steps. **Handy Tips** * Integration does not differ for challenge or frictionless flow. * Frictionless flow is not applicable for payments on cards. Given below is a diagram that explains the 3DS2 flow: ## Quick Summary of Integration Changes Ensure you make the following changes in your Create a Payment API request. There is no change in the response. ## Parameter Changes | Description New Parameters | Pass these new parameters: - `authentication` and related child parameter: These determine the [authentication channel](/payments/payment-gateway/s2s-integration/json/v1/build-integration/cards/migrate-3ds2.0#:~:text=customer%27s%20IP%20address.-,authentication,-optional) being used. * `browser` and related child parameters: These capture the customer's [browser details](/payments/payment-gateway/s2s-integration/json/v1/build-integration/cards/migrate-3ds2.0#:~:text=the%20authentication%20channel.-,browser,-mandatory), which are sent to the banks to aid their risk analysis. *** Existing Parameter | The `ip` parameter is now mandatory. #### Sample Code The following endpoint creates a payment via the redirect flow. /payments/create/json ````curl: Curl theme={null} curl -X POST \ https://api.razorpay.com/v1/payments/create/json \ -u [YOUR_KEY_ID]:[YOUR_KEY_SECRET] \ -H "Content-Type: application/json" \ -d '{ "amount": 100, "currency": "INR", "contact": "9900008989", "email": "gaurav.kumar@example.com", "order_id": "order_DPzFe1Q1dEOKed", "method": "card", "card":{ "number": "4386289407660153", "name": "Gaurav", "expiry_month": 11, "expiry_year": 30, "cvv": 100 }, "authentication":{ "authentication_channel": "browser" }, ### 3DS2.0 Browser Parameters### "browser":{ "java_enabled": false, "javascript_enabled": false, "timezone_offset": 11, "color_depth": 23, "screen_width": 23, "screen_height": 100 }, "ip": "105.106.107.108", "referer": "https://merchansite.com/example/paybill", "user_agent": "Mozilla/5.0" }' ```json: Response { "razorpay_payment_id": "pay_ERM7x4yAFwlZZD", "next": [ { "action": "redirect", "url": "https://api.razorpay.com/v1/payments/ERM7xFqd0ZEGEc/authorize" } ] } ```java: Java import org.json.JSONObject; import com.razorpay.Payment; import com.razorpay.RazorpayClient; import com.razorpay.RazorpayException; RazorpayClient instance = new RazorpayClient("[YOUR_KEY_ID]", "[YOUR_KEY_SECRET]"); JSONObject paymentRequest = new JSONObject(); paymentRequest.put("amount", 100); paymentRequest.put("currency", "INR"); paymentRequest.put("contact", "9000090000"); paymentRequest.put("email", "gaurav.kumar@example.com"); paymentRequest.put("order_id", "order_DPzFe1Q1dEOKed"); paymentRequest.put("method", "card"); JSONObject card = new JSONObject(); card.put("number", "4386289407660153"); card.put("name", "Gaurav"); card.put("expiry_month", 11); card.put("expiry_year", 30); card.put("cvv", 100); paymentRequest.put("card", card); JSONObject authentication = new JSONObject(); authentication.put("authentication_channel", "browser"); paymentRequest.put("authentication", authentication); JSONObject browser = new JSONObject(); browser.put("java_enabled", false); browser.put("javascript_enabled", false); browser.put("timezone_offset", 11); browser.put("color_depth", 23); browser.put("screen_width", 23); browser.put("screen_height", 100); paymentRequest.put("browser", browser); paymentRequest.put("ip", "105.106.107.108"); paymentRequest.put("referer", "https://merchansite.com/example/paybill"); paymentRequest.put("user_agent", "Mozilla/5.0"); Payment payment = instance.payments.createJsonPayment(paymentRequest); ```csharp: .NET RazorpayClient client = new RazorpayClient("[YOUR_KEY_ID]", "[YOUR_KEY_SECRET]"); Dictionary paymentRequest = new Dictionary(); paymentRequest.Add("amount", 100); paymentRequest.Add("currency", "INR"); paymentRequest.Add("contact", "9900008989"); paymentRequest.Add("email", "gaurav.kumar@example.com"); paymentRequest.Add("order_id", "order_DPzFe1Q1dEOKed"); paymentRequest.Add("method", "card"); Dictionary card = new Dictionary(); card.Add("number", "4386289407660153"); card.Add("name", "Gaurav"); card.Add("expiry_month", "11"); card.Add("expiry_year", "30"); card.Add("cvv", "100"); paymentRequest.Add("card", card); Dictionary authentication = new Dictionary(); authentication.Add("authentication_channel", "browser"); paymentRequest.Add("authentication", authentication); Dictionary browser = new Dictionary(); browser.Add("java_enabled", false); browser.Add("javascript_enabled", false); browser.Add("timezone_offset", 11); browser.Add("color_depth", 23); browser.Add("screen_width", 23); browser.Add("screen_height", 100); paymentRequest.Add("browser", browser); paymentRequest.Add("ip", "105.106.107.108"); paymentRequest.Add("referer", "https://merchansite.com/example/paybill"); paymentRequest.Add("user_agent", "Mozilla/5.0"); Payment payment = client.Payment.CreateJsonPayment(paymentRequest); ```php: PHP $api = new Api($key_id, $secret); $api->payment->createPaymentJson(array('amount'=>100,'currency'=>'INR','contact'=>'9900008989','email'=>'gaurav.kumar@example.com','order_id'=>'order_DPzFe1Q1dEOKed','method'=>'card','card'=>array('number'=>'4386289407660153','name'=>'Gaurav','expiry_month'=>11,'expiry_year'=>30,'cvv'=>100,),'authentication'=>array('authentication_channel'=>'browser',),'browser'=>array('java_enabled'=>false,'javascript_enabled'=>false,'timezone_offset'=>11,'color_depth'=>23,'screen_width'=>23,'screen_height'=>100,),'ip'=>'105.106.107.108','referer'=>'https://merchansite.com/example/paybill','user_agent'=>'Mozilla/5.0',)); ```javascript: Node.js var instance = new Razorpay({ key_id: 'YOUR_KEY_ID', key_secret: 'YOUR_SECRET' }) var data = { "amount": 100, "currency": "INR", "contact": "9900008989", "email": "gaurav.kumar@example.com", "order_id": "order_DPzFe1Q1dEOKed", "method": "card", "card": { "number": "4386289407660153", "name": "Gaurav", "expiry_month": 11, "expiry_year": 30, "cvv": 100 }, "authentication": { "authentication_channel": "browser" }, "browser": { "java_enabled": false, "javascript_enabled": false, "timezone_offset": 11, "color_depth": 23, "screen_width": 23, "screen_height": 100 }, "ip": "105.106.107.108", "referer": "https://merchansite.com/example/paybill", "user_agent": "Mozilla/5.0" }; instance.payments.createPaymentJson(data); ```python: Python import razorpay client = razorpay.Client(auth=("YOUR_ID", "YOUR_SECRET")) data = { "amount": 100, "currency": "INR", "contact": "9900008989", "email": "gaurav.kumar@example.com", "order_id": "order_DPzFe1Q1dEOKed", "method": "card", "card": { "number": "4386289407660153", "name": "Gaurav", "expiry_month": 11, "expiry_year": 30, "cvv": 100 }, "authentication": { "authentication_channel": "browser" }, "browser": { "java_enabled": False, "javascript_enabled": False, "timezone_offset": 11, "color_depth": 23, "screen_width": 23, "screen_height": 100 }, "ip": "105.106.107.108", "referer": "https://merchansite.com/example/paybill", "user_agent": "Mozilla/5.0" } client.payment.createPaymentJson(data) ```ruby: Ruby require "razorpay" Razorpay.setup('YOUR_KEY_ID', 'YOUR_SECRET') para_attr = data = { "amount": 100, "currency": "INR", "contact": "9900008989", "email": "gaurav.kumar@example.com", "order_id": "order_DPzFe1Q1dEOKed", "method": "card", "card":{ "number": "4386289407660153", "name": "Gaurav", "expiry_month": 11, "expiry_year": 30, "cvv": 100 }, "authentication":{ "authentication_channel": "browser" }, "browser":{ "java_enabled": false, "javascript_enabled": false, "timezone_offset": 11, "color_depth": 23, "screen_width": 23, "screen_height": 100 }, "ip": "105.106.107.108", "referer": "https://merchansite.com/example/paybill", "user_agent": "Mozilla/5.0" } Razorpay::Payment.create_json_payment(para_attr) ```go: Go import ( razorpay "github.com/razorpay/razorpay-go" ) client := razorpay.NewClient("YOUR_KEY_ID", "YOUR_SECRET") para_attr := map[string]interface{}{ "amount": 100, "currency": "INR", "contact": "9900008989", "email": "gaurav.kumar@example.com", "order_id": "order_DPzFe1Q1dEOKed", "method": "card", "card": map[string]interface{}{ "number": "4386289407660153", "name": "Gaurav", "expiry_month": 11, "expiry_year": 30, "cvv": 100, }, "authentication": map[string]interface{}{ "authentication_channel": "browser", }, "browser": map[string]interface{}{ "java_enabled": false, "javascript_enabled": false, "timezone_offset": 11, "color_depth": 23, "screen_width": 23, "screen_height": 100, }, "ip": "105.106.107.108", "referer": "https://merchansite.com/example/paybill", "user_agent": "Mozilla/5.0", } body, err := client.Payment.CreatePaymentJson(para_attr, nil) ```` **Handy Tips** * The payment request and response would remain same for both frictionless and challenge scenarios. * The payment request would remain same for both redirection and native OTP flows. #### Request Parameters `amount` *mandatory* : `integer` Payment amount in the smallest currency sub-unit. For example, if the amount to be charged is 299, then pass `29900` in this field. `currency` *mandatory* : `string` Currency code for the currency in which you want to accept the payment. For example, INR. Refer to the list of supported currencies. Length must be of 3 characters. `order_id` *mandatory* : `string` Unique identifier of the Order generated in the first step. `email` *mandatory* : `string` Email address of the customer. Maximum length supported is 40 characters. `contact` *mandatory* : `string` Phone number of the customer. Maximum length supported is 15 characters, inclusive of country code. `method` *mandatory* : `string` Name of the payment method. Possible value is `card`. `card` *mandatory* : `object` Details associated with the card. `number` : `string` Unformatted card number. `name` : `string` Name of the cardholder. `expiry_month` : `string` Expiry month for the card in MM format. `expiry_year` : `string` Expiry year for the card in YY format. `cvv` : `string` CVV printed on the back of the card. **Handy Tips** * CVV is not required by default for tokenised cards across all networks. * CVV is optional for tokenised card payments. Do not pass dummy CVV values. * To implement this change, skip passing the `cvv` parameter entirely, or pass a `null` or empty value in the CVV field. * We recommend removing the CVV field from your checkout UI/UX for tokenised cards. * If CVV is still collected for tokenised cards and the customer enters a CVV, pass the entered CVV value to Razorpay. `notes` *optional* : `object` Key-value object used for passing tracking info. Refer to [Notes](/api/understand#notes) for more details. `callback_url` *optional* : `string` URL endpoint where Razorpay will submit the final payment status. `referrer` *optional* : `string` Referrer header passed by the client's browser. `user-agent` *mandatory* : `string` The User-Agent header of the user's browser. Default value will be passed by Razorpay if not provided by merchant. `ip` *mandatory* : `string` The customer's IP address. `authentication` *optional* : `object` Details of the authentication channel. `authentication_channel` : `string` The authentication channel for the payment. Possible values: * `browser` (default) * `app` `browser` *mandatory* : `object` Information regarding the customer's browser. This parameter need not be passed when `authentication_channel=app`. `java_enabled` : `boolean` Indicates whether the customer's browser supports Java. Obtained from the `navigator` HTML DOM object. Possible values: * `true`: Customer's browser supports Java. * `false`: Customer's browser does not support Java. `javascript_enabled` : `boolean` Indicates whether the customer's browser can execute JavaScript. Obtained from the `navigator` HTML DOM object. Possible values: * `true`: Customer's browser can execute JavaScript. * `false`: Customer's browser cannot execute JavaScript. `timezone_offset` : `integer` Time difference between UTC time and the cardholder browser local time. Obtained from the `getTimezoneOffset()` method applied to Date object. `screen_width` : `integer` Total width of the payer's screen in pixels. Obtained from the `screen.width` HTML DOM property. `screen_height` : `integer` Obtained from the `navigator` HTML DOM object. `color_depth` : `integer` Obtained from payer's browser using the `screen.colorDepth` HTML DOM property. `language` : `string` Obtained from payer's browser using the `navigator.language` HTML DOM property. Maximum limit of 8 characters. #### Response Parameters If the payment request is valid, the response contains the following fields. `razorpay_payment_id` : `string` Unique identifier of the payment. Present for all responses. `next` : `array` A list of action objects available to you to continue the payment process. `action` : `string` An indication of the next step available to you to continue the payment process. Possible value: * `redirect`: The payment requires the customer to be redirected to a bank page. Redirect the customer's browser to the URL returned in the `url` attribute of the object. `url` : `string` URL to be used for the action indicated. For `redirect`, this will be a URL that the customer's browser needs to be redirected to for authentication. ## Next Step The rest of the integration steps mentioned in the [S2S JSON V1 Cards Build Integration document](/payments/payment-gateway/s2s-integration/json/v1/build-integration/cards) remain the same. No changes are required in those. After completing the build integration steps, you can continue with [Step 2: Test Integration](/payments/payment-gateway/s2s-integration/json/v1/test-integration)