MoMo Wallet Drop-in integration

Add MoMo Wallet to an existing Drop-in integration.

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

Before you begin

This page explains how to add MoMo Wallet 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 Wallet integration:

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

Show MoMo Wallet 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 Wallet 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).

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

curl https://checkout-test.adyen.com/v51/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 Model.Checkout.Amount("VND", 1000);
var details = new Model.Checkout.DefaultPaymentMethodDetails{
  Type = "momo_wallet""
};
var paymentsRequest = new 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);

The /payments response contains:

action: Object containing information about the redirect.

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

/payments response

{
  "resultCode":"RedirectShopper",
  "action":{
     "method":"GET",
     "paymentData":"Ab02b4c0!BQABAgCSZT7t...",
     "paymentMethodType":"momo_wallet",
     "type":"redirect",
     "url":"https://test.adyen.com/hpp/redirect.shtml?brandCode=.."
  },
  "details":[
     {
        "key":"payload",
        "type":"text"
     }
  ],
  ...
}

Pass the action object to your client app.

Check the payment result

Drop-in redirects the shopper to MoMo Wallet 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:
- paymentData: The value from the /payments response.
- details: The actionComponentData.details object from Drop-in.
https://docs.adyen.com/payment-methods/gcash/android-drop-in#-payments-details-request
/payments/details request
{ "{hint:Value from the /payments response}paymentData{/hint}":"Ab02b4c0!BQABAgCJN1wRZuGJmq8dMncmypvknj9s7l5Tj...", "{hint:Value from actionComponentData.details}details{/hint}":{ "payload":"Ab02b4c0!BQABAgCW5sxB4e/==" } }
You receive a response containing:
- resultCode: Use this to present the payment result to your shopper.
- pspReference: Our unique identifier for the transaction.
https://docs.adyen.com/payment-methods/gcash/android-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 Wallet 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 Wallet'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	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 notification 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 notification webhooks to know the outcome of the payment. The notification webhooks you can receive for MoMo Wallet 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 Wallet 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 notification 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 notifications. If you have not requested for this additional configuration yet, contact our Support Team.

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 notification.
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.

https://docs.adyen.com/payment-methods/momo/api-only#recurring-momo

curl https://checkout-test.adyen.com/v51/payments \
-H "x-API-key: YOUR_X-API-KEY" \
-H "content-type: application/json" \
-d '{
       "amount":{
          "value":1000,
          "currency":"PHP"
       },
       "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 => "PHP",
    :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("PHP");
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" => "PHP",
    "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': 'PHP'
   },
   '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 Model.Checkout.Amount("PHP", 1000);
var details = new Model.Checkout.DefaultPaymentMethodDetails{
  Type = "momo_wallet",
  StoredPaymentMethodId = "7219687191761347"
};
var paymentsRequest = new 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 = "Subscription",
  ShopperInteraction = "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: "PHP", 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);

Test and go live

To make MoMo Wallet 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 desktop browser, use the test app to scan the QR.
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 Wallet test payments in your Customer Area > Transactions > Payments.

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