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MoMo Drop-in integration

Add MoMo to an existing Drop-in integration.

Our Android Drop-in renders MoMo in your payment form, and redirects the shopper to the MoMo app or website where they can complete the payment.

Before you begin

This page explains how to add MoMo to your existing Android Drop-in integration. The Android 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 integration:

Make sure you have set up your back end implementation.
Add MoMo in your test Customer Area.

Show MoMo 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 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 proceeds to pay, Drop-in returns the paymentComponentData.paymentMethod.

Pass the paymentComponentData.paymentMethod to your server.
From your server, make a /payments request, specifying:
- paymentMethod: The paymentComponentData.paymentMethod from your client app.
- returnUrl: URL to where the shopper should be redirected back to after they complete the payment. Get this URL from the Component in the RedirectComponent.getReturnUrl(context).

curl https://checkout-test.adyen.com/v68/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:paymentComponentData.paymentMethod from app}paymentMethod{/hint}":{
    "type":"momo_wallet""
  },
  "returnUrl":"adyencheckout://your.package.name"
}'

# 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_wallet"
  },
  :returnUrl => "adyencheckout://your.package.name",
  :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_wallet");
    paymentsRequest.setPaymentMethod(paymentMethodDetails);

    paymentsRequest.setReference("YOUR_ORDER_NUMBER");
    paymentsRequest.setReturnUrl("adyencheckout://your.package.name");

    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_wallet"
  ),
  "returnUrl" => "adyencheckout://your.package.name",
  "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_wallet'
   },
   'returnUrl': 'adyencheckout://your.package.name',
   '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 Adyen.Model.Checkout.Amount("VND", 1000);
var details = new Adyen.Model.Checkout.DefaultPaymentMethodDetails{
  Type = "momo_wallet"
};
var paymentsRequest = new Adyen.Model.Checkout.PaymentRequest
{
  Reference = "YOUR_ORDER_NUMBER",
  Amount = amount,
  ReturnUrl = @"adyencheckout://your.package.name",
  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_wallet'
    },
    reference: "YOUR_ORDER_NUMBER",
    merchantAccount: config.merchantAccount,
    returnUrl: "adyencheckout://your.package.name"
}).then(res => res);

https://docs.adyen.com/pt/pt/payment-methods/momo-wallet/android-drop-in#android-payments

The /payments response contains an action object with the information needed to redirect the shopper.

{
   "resultCode":"RedirectShopper",
   "action":{
      "paymentMethodType":"momo_wallet",
      "method":"GET",
      "url":"https://checkoutshopper-test.adyen.com/checkoutshopper/checkoutPaymentRedirect?redirectData=...",
      "type":"redirect"
   }
}

https://docs.adyen.com/pt/pt/payment-methods/momo-wallet/android-component#-payments-response

If your integration is set up correctly, the action object is passed from your server to the client.

Check the payment result

Drop-in redirects the shopper to complete the payment. When the shopper returns back to your app, Drop-in provides the actionComponentData object.

From your server, make a POST /payments/details request providing:

details: The actionComponentData.details object from Drop-in.

  curl https://checkout-test.adyen.com/v68/payments/details \
  -H "x-API-key: YOUR_X-API-KEY" \
  -H "content-type: application/json" \
  -d '{
       "details": {
         "redirectResult": "eyJ0cmFuc1N0YXR1cyI6IlkifQ=="
     }
  }'

https://docs.adyen.com/pt/pt/payment-methods/momo-wallet/android-drop-in#-payments-details-request

You receive a response containing:

resultCode: Use this to present the payment result to your shopper.
pspReference: Our unique identifier for the transaction.

{
     "resultCode": "Authorised",
     "pspReference": "PPKFQ89R6QRXGN82"
}

https://docs.adyen.com/pt/pt/payment-methods/momo-wallet/android-drop-in#-payments-details-response

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 are:

resultCode	Description	Action to take
Authorised	The payment was successful.	Inform the shopper that the payment has been successful.
Cancelled	The shopper cancelled the payment while on MoMo's website or app.	Ask the shopper whether they want to continue with the order, or ask them to select a different payment method.
Pending or Received	The shopper has completed the payment but the final result is not yet known.	Inform the shopper that you've received their order, and are waiting for the payment to be completed. To know the final result of the payment, wait for the AUTHORISATION webhook.
Refused	The payment was refused by MoMo Wallet.	Ask the shopper to try the payment again using a different payment method.

If the shopper failed to return to your website or app, wait for webhooks to know the outcome of the payment. The webhooks you can receive for MoMo are:

eventCode	success field	Description	Action to take
AUTHORISATION	false	The transaction failed.	Cancel the order and inform the shopper that the payment failed.
AUTHORISATION	true	The shopper successfully completed the payment.	Inform the shopper that the payment has been successful and proceed with the order.
OFFER_CLOSED	true	The shopper did not complete the payment.	Cancel the order and inform the shopper that the payment timed out.

Recurring payments

MoMo supports recurring transactions. To make recurring transactions, you need to:

Create a shopper token.
Use the token to make future payments for the shopper.

Create a token

To create a token, include in your /payments request:

storePaymentMethod: true
shopperReference: Your unique identifier for the shopper.

When the payment has been settled, you receive a webhook containing:

eventCode: RECURRING_CONTRACT
originalReference: The pspReference of the initial payment.
pspReference: This is the token that you need to make recurring payments for this shopper.

Make sure that your server is able to receive RECURRING_CONTRACT as part of your standard webhooks. You can enable the RECURRING_CONTRACT event code in the webhook settings page.

Make a payment with a token

To make a payment with the token, include in your /payments request:

paymentMethod.storedPaymentMethodId: The pspReference from the RECURRING_CONTRACT webhook.
You can also get this value by using the /listRecurringDetails endpoint.
shopperReference: The unique shopper identifier that you specified when creating the token.
shopperInteraction: ContAuth

recurringProcessingModel: Use Subscription for a series of transactions following a fixed time interval or UnscheduledCardOnFile for contracts with non-fixed time interval.

curl https://checkout-test.adyen.com/v68/payments \
-H "x-API-key: YOUR_X-API-KEY" \
-H "content-type: application/json" \
-d '{
       "amount":{
          "value":1000,
          "currency":"VND"
       },
       "paymentMethod":{
          "type":"momo_wallet",
          "storedPaymentMethodId":"7219687191761347"
       },
       "reference":"YOUR_ORDER_NUMBER",
       "merchantAccount":"YOUR_MERCHANT_ACCOUNT",
       "shopperReference":"YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j",
       "shopperInteraction":"ContAuth",
       "recurringProcessingModel": "Subscription"
}'

# 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_wallet",
    :storedPaymentMethodId => "7219687191761347"
  },
  :returnUrl => "https://your-company.com/checkout?shopperOrder=12xy..",
  :shopperReference => "YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j",
  :merchantAccount => "YOUR_MERCHANT_ACCOUNT",
  :shopperInteraction => "ContAuth",
  :recurringProcessingModel => "Subscription"
})

// 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.setRecurringDetailReference("7219687191761347");
paymentMethodDetails.setType("momo_wallet");
paymentsRequest.setPaymentMethod(paymentMethodDetails);

paymentsRequest.setReference("YOUR_ORDER_NUMBER");
paymentsRequest.setReturnUrl("https://your-company.com/checkout?shopperOrder=12xy..");
paymentsRequest.setShopperReference("YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j");
paymentsRequest.setShopperInteraction("ContAuth");
paymentsRequest.setRecurringProcessingModel("Subscription");

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_wallet",
    "storedPaymentMethodId" => "7219687191761347"
  ),
  "returnUrl" => "https://your-company.com/checkout?shopperOrder=12xy..",
  "shopperReference" => "YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j",
  "recurringProcessingModel" => "Subscription",
  "shopperInteraction" => "ContAuth",
  "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_wallet',
      'storedPaymentMethodId': '7219687191761347'
   },
   'returnUrl': 'https://your-company.com/checkout?shopperOrder=12xy..',
   'shopperReference': 'YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j'
   'merchantAccount': 'YOUR_MERCHANT_ACCOUNT',
   'shopperInteraction':'ContAuth',
   'recurringProcessingModel': 'Subscription'
})

// 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 Adyen.Model.Checkout.Amount("VND", 1000);
var details = new Adyen.Model.Checkout.DefaultPaymentMethodDetails{
  Type = "momo_wallet",
  StoredPaymentMethodId = "7219687191761347"
};
var paymentsRequest = new Adyen.Model.Checkout.PaymentRequest
{
  Reference = "YOUR_ORDER_NUMBER",
  Amount = amount,
  ReturnUrl = @"https://your-company.com/checkout?shopperOrder=12xy..",
  MerchantAccount = "YOUR_MERCHANT_ACCOUNT",
  ShopperReference = "YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j",
  RecurringProcessingModel = Adyen.Model.Checkout.PaymentRequest.RecurringProcessingModelEnum.Subscription,
  ShopperInteraction = Adyen.Model.Checkout.PaymentRequest.ShopperInteractionEnum.ContAuth,
  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_wallet',
        storedPaymentMethodId: "7219687191761347"
    },
    reference: "YOUR_ORDER_NUMBER",
    merchantAccount: config.merchantAccount,
    shopperReference: "YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j",
    returnUrl: "https://your-company.com/checkout?shopperOrder=12xy..",
    shopperInteraction: "ContAuth",
    recurringProcessingModel: "Subscription"
}).then(res => res);

https://docs.adyen.com/pt/pt/payment-methods/momo-wallet/android-component#recurring-momo

Test and go live

To make MoMo payments in the test environment:

Download the MoMo test app for iOS or Android at https://test-payment.momo.vn/download/. If you're testing on a mobile browser, you see a link to download the test app. If you're testing on a desktop browser, use the test app to scan the QR code.
Use MoMo's test credentials to log in to the test app. MoMo provides different credentials depending on the scenario that you want to test (for example, failed scenarios).

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

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