Vietnamese online banking

Our Web Drop-in renders MoMo ATM in your payment form, and redirects the shopper to MoMo ATM's website to complete the payment.

When making a MoMo ATM payment, you additionally need to:

• Handle the redirect result after the shopper returns to your website.

Before you begin

This page explains how to add MoMo ATM to your existing Web Drop-in integration. The Web Drop-in integration works the same way for all payment methods. If you haven't done this integration yet, refer to our Drop-in integration guide.

Before starting your MoMo ATM integration:

1. Make sure that you have set up your back end implementation, and added Drop-in to your payments form.
2. Add MoMo ATM in your test Customer Area.

Show MoMo ATM in your payment form

Drop-in uses the countryCode and the amount.currency from your /paymentMethods request to show the available payment methods to your shopper.

To show MoMo ATM in your payment form, specify in your /paymentMethods request:

• countryCode: VN
• amount.currency:VND
• amount.value: The value of the payment.

Make a payment

When the shopper selects the Pay button, Drop-in calls the onSubmit event, which contains a state.data.

1. Pass the state.data to your server.

2. From your server, make a /payments request, specifying:

   • paymentMethod: The state.data.paymentMethod from the onSubmit event from your front end.
   • returnUrl: The URL where the shopper will be redirected back to after completing the payment. This URL can have a maximum of 1024 characters and should include the protocol such as http:// or https://. For example, https://your-company.com/checkout/. You can also include your own additional query parameters, for example, shopper ID or order reference number.
   https://docs.adyen.com/payment-methods/vietnamese-online-banking/web-drop-in#web-payments

   • curl
   • Ruby
   • Java
   • PHP
   • Python
   • C#
   • NodeJS

   curl Ruby Java PHP Python C# NodeJS

   curl https://checkout-test.adyen.com/v53/payments \
   -H "x-API-key: YOUR_X-API-KEY" \
   -H "content-type: application/json" \
   -d '{
     "merchantAccount":"YOUR_MERCHANT_ACCOUNT",
     "reference":"YOUR_ORDER_NUMBER",
     "amount":{
       "currency":"VND",
       "value":1000
     },
     "{hint:state.data.paymentMethod from onSubmit}paymentMethod{/hint}":{
       "type":"momo_atm"
     },
     "returnUrl":"https://your-company.com/checkout?shopperOrder=12xy.."
   }'

   # Set your X-API-KEY with the API key from the Customer Area.
   adyen = Adyen::Client.new
   adyen.api_key = "YOUR_X-API-KEY"
    
   response = adyen.checkout.payments({
     :amount => {
       :currency => "VND",
       :value => 1000
     },
     :reference => "YOUR_ORDER_NUMBER",
     :paymentMethod => {
       :type => "momo_atm"
     },
     :returnUrl => "https://your-company.com/checkout?shopperOrder=12xy..",
     :merchantAccount => "YOUR_MERCHANT_ACCOUNT"
   })

   // Set YOUR_X-API-KEY with the API key from the Customer Area.
   // Change to Environment.LIVE and add the Live URL prefix when you're ready to accept live payments.
       Client client = new Client("YOUR_X-API-KEY", Environment.TEST);
       Checkout checkout = new Checkout(client);
   
       PaymentsRequest paymentsRequest = new PaymentsRequest();
   
       String merchantAccount = "YOUR_MERCHANT_ACCOUNT";
       paymentsRequest.setMerchantAccount(merchantAccount);
   
       Amount amount = new Amount();
       amount.setCurrency("VND");
       amount.setValue(15000L);
       paymentsRequest.setAmount(amount);
   
       DefaultPaymentMethodDetails paymentMethodDetails = new DefaultPaymentMethodDetails();
       paymentMethodDetails.setType("momo_atm");
       paymentsRequest.setPaymentMethod(paymentMethodDetails);
   
       paymentsRequest.setReference("YOUR_ORDER_NUMBER");
       paymentsRequest.setReturnUrl("https://your-company.com/checkout?shopperOrder=12xy..");
   
       PaymentsResponse paymentsResponse = checkout.payments(paymentsRequest);

   // Set your X-API-KEY with the API key from the Customer Area.
   $client = new \Adyen\Client();
   $client->setXApiKey("YOUR_X-API-KEY");
   $service = new \Adyen\Service\Checkout($client);
   
   $params = array(
     "amount" => array(
       "currency" => "VND",
       "value" => 1000
     ),
     "reference" => "YOUR_ORDER_NUMBER",
     "paymentMethod" => array(
       "type" => "momo_atm"
     ),
     "returnUrl" => "https://your-company.com/checkout?shopperOrder=12xy..",
     "merchantAccount" => "YOUR_MERCHANT_ACCOUNT"
   );
   $result = $service->payments($params);

   #Set your X-API-KEY with the API key from the Customer Area.
   adyen = Adyen.Adyen()
   adyen.client.xapikey = 'YOUR_X-API-KEY'
   
   result = adyen.checkout.payments({
      'amount': {
         'value': 1000,
         'currency': 'VND'
      },
      'reference': 'YOUR_ORDER_NUMBER',
      'paymentMethod': {
         'type': 'momo_atm'
      },
      'returnUrl': 'https://your-company.com/checkout?shopperOrder=12xy..',
      'merchantAccount': 'YOUR_MERCHANT_ACCOUNT'
   })

   // Set your X-API-KEY with the API key from the Customer Area.
   var client = new Client ("YOUR_X-API-KEY", Environment.Test);
   var checkout = new Checkout(client);
   
   var amount = new Model.Checkout.Amount("VND", 1000);
   var details = new Model.Checkout.DefaultPaymentMethodDetails{
     Type = "momo_atm"
   };
   var paymentsRequest = new Model.Checkout.PaymentRequest
   {
     Reference = "YOUR_ORDER_NUMBER",
     Amount = amount,
     ReturnUrl = @"https://your-company.com/checkout?shopperOrder=12xy..",
     MerchantAccount = "YOUR_MERCHANT_ACCOUNT",
     PaymentMethod = details
   };
   
   var paymentResponse = checkout.Payments(paymentsRequest);

   // Set your X-API-KEY with the API key from the Customer Area.
   const {Client, Config, CheckoutAPI} = require('@adyen/api-library');
   const config = new Config();
   // Set your X-API-KEY with the API key from the Customer Area.
   config.apiKey = '[API_KEY]';
   config.merchantAccount = '[YOUR_MERCHANT_ACCOUNT]';
   const client = new Client({ config });
   client.setEnvironment("TEST");
   const checkout = new CheckoutAPI(client);
   checkout.payments({
       amount: { currency: "VND", value: 1000 },
       paymentMethod: {
           type: 'momo_atm'
       },
       reference: "YOUR_ORDER_NUMBER",
       merchantAccount: config.merchantAccount,
       returnUrl: "https://your-company.com/checkout?shopperOrder=12xy.."
   }).then(res => res);

   The /payments response contains:

   • action.method: GET or POST. The HTTP request method that you should use. After the shopper completes the payment, they will be redirected back to your returnURL using the same method.
     The redirect method depends on your payment method configuration and the length of the data included in the request, so make sure that your integration can handle both HTTP GET and HTTP POST methods.

   To verify the payment result, you also need the following from the /payments response:

   • action.paymentData: Store this on your server — this is the paymentData value that you send in your /payments/details request.
   • details: Array of parameters that you need to send in your /payments/details request. For example, payload or redirectResult.
     The parameters can vary based on the payment method configuration. Always check the details array for the parameters that you need to send in your next API request.
   https://docs.adyen.com/payment-methods/vietnamese-online-banking/web-drop-in#-payments-response

   /payments response

     {
       "resultCode": "RedirectShopper",
        "action": {
          "method": "GET",
          "paymentData": "Ab02b4c0!BQABAgCSZT7t...",
          "paymentMethodType": "momo_atm",
          "type": "redirect",
          "url": "https://test.adyen.com/hpp/redirect.shtml?brandCode=.."
     },
       "details": [
         {
             "key": "payload",
             "type": "text"
         }
       ],
     ...
     }
3. Pass the action object to your front end.

Handle the redirect result

Drop-in uses dropin.handleAction(action) to redirect the shopper to MoMo ATM. After the shopper is redirected back to your website, check the redirect result.

• From your server, make a POST /payments/details request, specifying:
  • paymentData: Value you received in the /payments response.
  • details: Object that contains the URL-decoded values of the parameters that were returned when the shopper was redirected back to your site. For example, payload. To check the parameters that you should submit, refer to the details array that you received in the /payments response.
  https://docs.adyen.com/payment-methods/vietnamese-online-banking/web-drop-in#-payments-details-request

  /payments/details request

  {
       "paymentData":"Ab02b4c0!BQABAgCJN1wRZuGJmq8dMncmypvknj9s7l5Tj...",
       "details":{
         "{hint:Verify the parameters from /payments response}payload{/hint}":"Ab02b4c0!BQABAgCW5sxB4e/=="
       }
  }

  You receive a response containing:
  • resultCode: Use this to present the result to your shopper.
  • pspReference: Our unique identifier for the transaction.
  https://docs.adyen.com/payment-methods/vietnamese-online-banking/web-drop-in#-payments-details-response

  /payments/details response

   {
     "resultCode": "Authorised",
     "pspReference": "88154795347618C"
   }

Present the payment result

Use the resultCode that you received in the /payments/details response to present the payment result to your shopper.

The resultCode values you can receive for MoMo ATM are:

If the shopper closed the browser and failed to return to your website, wait for notification webhooks to know the outcome of the payment. The notification webhooks you can receive for MoMo ATM are:

Test and go live

To test MoMo ATM payments, select any bank from the list and use the following test cards and credentials:

Check the status of MoMo ATM test payments in your Customer Area > Transactions > Payments.

Before you can accept live MoMo ATM payments, you need to submit a request for MoMo ATM in your live Customer Area.

See also