Pay Later

Pay later Checkout Payments with MoMo E-Wallet are supported on various platforms:

• Desktop websites
• Mobile websites
• Mobile apps
• Devices that do not support internet browser

The instructions below show how you can process accordingly for each platform type and how API Configurations operate.

Process Flow

API Configuration

HTTP Information

Initiate payment method

On the merchant's payment page, after customers choose to pay with MoMo e-wallet, merchant server needs to call MoMo's API payWithVTS to get payment methods and then apply suitable ones to their platforms.

requestType: Identify the type of the request

HTTP Request

POST /v2/gateway/api/create

Attribute	Type	Required	Description
partnerCode	String		Integration information
subPartnerCode	String		Sub partner Id
partnerName	String		Partner name
storeId	String		Store ID
requestId	String(50)		Request ID, unique for each request, MoMo's partner uses the requestId field for idempotency control
amount	Long		Amount needs to be paid Min: 1.000 VND Max: 50.000.000 VND Currency: VND Data type: Long
orderId	String		Partner Transaction ID Regex: ^[0-9a-zA-Z]([-_.]*[0-9a-zA-Z]+)*$
orderInfo	String		Order's information
orderGroupId	Long		The orderGroupId will be provided by MoMo to classify groups of orders for further operational activities. Please contact MoMo to use this field.
redirectUrl	String		A partner's URL. This URL is used to redirect from MoMo page to partner's page after customer's payment. Support: AppLink and WebLink
ipnUrl	String		Partner API. Used by MoMo to submit payment results by IPN method (server-to-server) method
requestType	String		payWithVTS
extraData	String		Default value is empty "" Encode base64 follow Jsonformat: {"key": "value"} Example with data: {"username": "momo"}=> data of extraData: eyJ1c2VybmFtZSI6ICJtb21vIn0=
items	List		List of products displayed on the payment page. Maximum: 50 items
userInfo	Object		Info of the customer
autoCapture	Boolean		If set to false, the payment will not be automatically captured.
lang	String		Language of returned message (vi or en)
signature	String		Signature to confirm information. Secure transaction in Hmac_SHA256 with format: a String sort all key name of data field from a-z: accessKey=$accessKey&amount=$amount&extraData=$extraData &ipnUrl=$ipnUrl&orderId=$orderId&orderInfo=$orderInfo &partnerCode=$partnerCode&redirectUrl=$redirectUrl &requestId=$requestId&requestType=$requestType

Details of an items

It is not required to add items. Howvever, each item added must have these fixed keys:

Attribute	Type	Required	Description
id	String		SKU number
name	String		Name of the product
description	String		Description of the product
category	String		Product classification/Product category
imageUrl	String		Link image of product
manufacturer	String		Name of manufacturer
price	Long		Unit price Currency: VND
currency	String		VND
quantity	Integer		Quantity number of the product. It must be greater than 0
unit	String		The units of measurement used for products
totalPrice	Long		Total price = price x quantity
taxAmount	Long		Total amount of tax

Example Item

{
  "id": "204727",  
  "name": "YOMOST Bac Ha&Viet Quat 170ml",  
  "description": "YOMOST Sua Chua Uong Bac Ha&Viet Quat 170ml/1 Hop",
  "category": "beverage",
  "imageUrl":"https://momo.vn/uploads/product1.jpg",
  "manufacturer":"Vinamilk",
  "price": 11000,               
  "quantity": 5,
  "unit":"hộp",
  "totalPrice": 55000,
  "taxAmount":"200"
}

Details of userInfo content

If this is provided, customer as MoMo user will be receive a notification or email (by choices).

Attribute	Type	Required	Description
name	String		Name of the customer as registered on merchant site
phoneNumber	String		Phone number of the customer as registered on merchant site
email	String		Email address of the customer as registered on merchant site

Example UserInfo

{
    "name": "Nguyen Van A",
    "phoneNumber": "0999888999",
    "email": "email_add@domain.com",
}

Redirecting information (redirectUrl)

WebLink: Links to open website.

AppLink: Link to open mobile application.

Learn more about AppLink

• Android: https://developer.android.com/training/app-links
• IOS: https://developer.apple.com/documentation/uikit/core_app/..

Example Request

{
  "partnerCode": "MOMO",
  "partnerName" : "Test",
  "storeId" : "MoMoTestStore",
  "requestType": "payWithVTS",
  "ipnUrl": "https://momo.vn",
  "redirectUrl": "https://momo.vn",
  "orderId": "MM1540456472575",
  "amount": 150000,
  "lang":  "vi",
  "orderInfo": "SDK team.",
  "requestId": "MM1540456472575",
  "extraData": "eyJ1c2VybmFtZSI6ICJtb21vIn0=",
  "signature": "fd37abbee777e13eaa0d0690d184e4d7e2fb43977281ab0e20701721f07a0e07"
}

Try yourself

HTTP Response

Attribute	Type	Required	Description
partnerCode	String		Integration information
requestId	String		Same as the original request
orderId	String		Partner Transaction ID
amount	Long		Same as the original payment amount
responseTime	Long		Time to respond payment results to partner Format: timestamp
message	String		Error description, error language is based on lang
resultCode	int		Result Code
payUrl	String		URL for switching from the partner's page to the MoMo payment page
deeplink	String		URL to open MoMo application directly (Customers must install MoMo app first) and payment confirmation screen.
qrCodeUrl	String		Data to generate QR code if you want customers to scan the QR code directly on your purchase page or to print it on the invoice. Note: This URL is NOT containing the image of the QR code, you need to use an external library to generate the QR code.
deeplinkMiniApp	String		URL to open the MoMo app's payment confirmation screen. Apply when partner's website is embedded into MoMo app.

On the production environment: You need to request permission to use qrCodeUrl, deeplink,deeplinkMiniApp fields.

Example response

{
  "partnerCode": "MOMO",
  "requestId": "MM1540456472575",
  "orderId": "MM1540456472575",
  "amount": 150000,
  "responseTime": 145256987,
  "message": "Thành công",
  "resultCode": 0,
  "payUrl": "https://test-payment.momo.vn/v2/gateway/pay?t=TU9NT1NKSTEyMDE5MDgyM3wxNjEzNTMyMDk3OTIyOjAxMjM0NTY3Nzg=",
  "deeplink": "momo://?action=payWithAppToken&amount=150000&fee=0&requestType=payment&orderLabel=M%C3%A3+%C4%91%C6%A1n+h%C3%A0ng&orderId=MM1540456472575&requestId=MM1540456472575&merchantnamelabel=Nh%C3%A0+cung+c%E1%BA%A5p&description=SDK+team.&partnerCode=MOMO&merchantcode=MOMO&language=vi&merchantname=MoMo+Payment&packageId=&extras=&extraData=email=abc@gmail.com&deeplinkCallback=https%3A%2F%2Ftest-payment.momo.vn%2Fgw_payment%2Fm2%3Fid%3DM7EWVy&callbackUrl=https%3A%2F%2Ftest-payment.momo.vn%2Fgw_payment%2Fm2%3Fid%3DM7EWVy&urlSubmitToken=https%3A%2F%2Ftest-payment.momo.vn%2Fgw_payment%2Fpayment_with_app%3FpartnerCode%3DMOMO%26accessKey%3DF8BBA842ECF85%26requestId%3DMM1540456472575%26orderId%3DMM1540456472575%26orderInfo%3DSDK%2Bteam.%26amount%3D150000%26signature%3Ddf2a347519abb91e9c1bd1bee80e675f4108cb6dbcac531979e805857293d486%26requestType%3DpayWithVTS%26payType%3Dapp-in-app&appScheme=",
  "qrCodeUrl": "https://test-payment.momo.vn/gw_payment/s/zoVKZd"
}

Payment

You need to install MoMo Test app and use MoMo TEST Account to process payment.

Payment guideline: Login > Home screen > Scan QR.

Processing payment result

For more information, see Payment Notification.

Parameter description

Description for parameters which are used by MoMo in the URL redirectUrl and the body content of ipnUrl.

Attribute	Type	Required	Description
partnerCode	String		Integration Information
orderId	String		Partner Transaction ID
requestId	String		Partner's requestId
amount	Long		Payment amount
partnerUserId	String		MoMo's unique identifier for each MoMo eWallet account.
orderInfo	String		Order's information
orderType	String		momo_wallet
transId	Long		MoMo's transaction ID
resultCode	Integer		Transaction status of the order Result Code
message	String		Error description, languague is based on lang
payType	String		Payment type: webApp, app,qror miniapp
responseTime	Long		Time to respond payment results to partner Format: timestamp
extraData	String		Extra Data. Default: ""
signature	String		Signature to confirm information. Secure transaction in Hmac_SHA256  algorithm with format: a String sort all key name of data field from a-z: accessKey=$accessKey&amount=$amount&extraData=$extraData &message=$message&orderId=$orderId&orderInfo=$orderInfo &orderType=$orderType&partnerCode=$partnerCode&payType= $payType&requestId=$requestId&responseTime= $responseTime&resultCode=$resultCode&transId=$transId

See also

• Check Transaction Status
• Reverse & Refund
• Confirm Payment