Please read Onboarding first!!

OVERVIEW

Payment from Parner site

Using methods:

METHODS

1. INIT PAYMENT

The following endpoint init a transaction.

SERVER CLIENT END POINT METHOD HEADERS
MOMO PARTNER /api/gw_payment/init POST Reference to Headers

SAMPLE

Sample request

{
  "requestId": "LetsChangeItForEachRequest",
  "reference1": "OrderID",
  "reference2": "",
  "client": "webinapp",
  "callbackUrl": "https://sample.partner.url/callback",
  "notifyUrl": "https://sample.partner.url/notify",
  "description": "",
  "totalAmount": 100000,
  "checksumKey": "ChecksumKey",
  "accountInfo": {
    "id": "",
    "name": "What Your Name",
    "email": "",
    "personalId": "",
    "dob": "",
    "address": "",
    "companyName": "",
    "phoneNumber": ""
  },
  "billList": [
    {
      "billId": "OrderID",
      "totalAmount": 100000,
      "description": "",
      "extras": {}
    }
  ],
  "extras": {}
}

Sample response

{
  "requestId": "1615261513",
  "referenceId": "1210744185270711_5295",
  "resultCode": 0,
  "message": "Success",
  "data": {
    "target": "https://testing.momo.vn:22447/fi/authorize?r=1615261513&s=gwpayment_dev_1615261513&t=1210744185270711_5295",
    "qrCode": "https://testing.momo.vn:22447/fi/gw_payment/authorize/s?r=1615261513&s=gwpayment_dev_1615261513&t=1210744185270711_5295"
  }
}

TRY IT

curl without PGP encrypt

curl -L -X POST 'https://testing.momo.vn:22446/api/gw_payment/init' -H 'Accept: application/pgp-encrypted' -H 'Content-Type: application/pgp-encrypted' -H 'partner-code: gwpayment_dev' --data-raw '{
  "requestId": "LetsChangeItForEachRequest",
  "reference1": "OrderID",
  "reference2": "",
  "client": "webinapp",
  "callbackUrl": "https://sample.partner.url/callback",
  "notifyUrl": "https://sample.partner.url/notify",
  "description": "",
  "totalAmount": 100000,
  "checksumKey": "ChecksumKey",
  "accountInfo": {
    "id": "",
    "name": "What Your Name",
    "email": "",
    "personalId": "",
    "dob": "",
    "address": "",
    "companyName": "",
    "phoneNumber": ""
  },
  "billList": [
    {
      "billId": "OrderID",
      "totalAmount": 100000,
      "description": "",
      "extras": {}
    }
  ],
  "extras": {}
}'

$response:

{
    "requestId": "LetsChangeItForEachRequest_1615878006714",
    "referenceId": "1826709321828577_6887",
    "resultCode": 0,
    "message": "Success",
    "data": {
        "target": "https://testing.momo.vn:22447/fi/authorize?r=LetsChangeItForEachRequest&s=gwpayment_dev_LetsChangeItForEachRequest_1615878006714&t=1826709321828577_6887",
        "qrCode": "https://testing.momo.vn:22447/fi/gw_payment/authorize/s?r=LetsChangeItForEachRequest&s=gwpayment_dev_LetsChangeItForEachRequest_1615878006714&t=1826709321828577_6887",
        "storeUrl": ""
    }
}

curl with PGP encrypt

curl -L -X POST 'https://testing.momo.vn:22446/api/gw_payment/init' -H 'Accept: application/pgp-encrypted' -H 'Content-Type: application/pgp-encrypted' -H 'partner-code: gwpayment' --data-raw '-----BEGIN PGP MESSAGE-----
Version: BCPG v1.65

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=3DFl
-----END PGP MESSAGE-----'

$response:

-----BEGIN PGP MESSAGE-----
Version: BCPG v1.65

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=TPLu
-----END PGP MESSAGE-----

Abtributes

Request Parameters

Name Type R L Description Error
requestId String(50) R L1 Unique string for each request 2003
client String(20) R L1 webinapp open Momo App by web
android_app open Momo App by Android App
ios_app open Momo App by iOS App		 2001
debitor String(20) L1 The MoMo Wallet ID do the payment, used to cross-check for the special flow
callbackUrl String(100) L1 Momo will redirect to it from the MoMo Web/App to push the payment result.
notifyUrl String(100) L1 Momo will invoke Notification Method from MoMo Backend, otherwise leave it blank
reference1 String(50) R L1 It's contract id / bill id etc. (depends on the partner)
It's related to the Callback and Notification Method.
Info displayed on the Momo App		 2001
reference2 String(50) L1 Extra info for support reference1 (depends on the partner)
It's related to the Callback and Notification Method.
description String(100) L1 Description for this transaction.
Info displayed on the Momo App
totalAmount Number R L2 Total of totalAmount in billList
Info displayed on the Momo App
checksumKey String(50) R L1 Used to check data when Callback
extras JsonObject L1 Used to store extras information
accountInfo JsonObject R L1 The contract owner information 2005
id String L2 Id, depend on partner
name String R L2 Holder bill
email String L2 Email
personalId String L2 Personal Id
dob String L2 Date of birth, format dd-mm-yyyy
address String L2 Address
companyName String L2 Company name
phoneNumber String L2 Phone number
billList JsonArray R L1 Used to store bills
billId String R L2 Bill id
totalAmount Number R L2 Total Amount of this bill
repaymentPeriod Number L2 Repayment peroid, default -1
description String L2 Bill description
extras JsonObject L2 Bill extras infomation

Response Params

Name Type R L Description
requestId String R L1 Same with request
referenceId String R L1 Unique for each response
resultCode Number R L1 The result code of transaction
message String R L1 The result message, which describes the code
data JsonObject R L1 data exist when resultCode is 0
target String R L2 Target link, use for redirect to MoMo App/Web
qrCode String R L2 MoMo QR code, use camera scan it to open MoMo App.

2. Check info

The following endpoint check status of payment request by request id

SERVER CLIENT END POINT METHOD HEADERS
MOMO PARTNER /api/gw_payment/info POST Reference to Headers

TRY IT

curl without PGP encrypt

curl -L -X POST 'https://testing.momo.vn:22446/api/gw_payment/info' -H 'Accept: application/pgp-encrypted' -H 'Content-Type: application/pgp-encrypted' -H 'partner-code: gwpayment_dev' --data-raw '{
    "requestId": "LetsChangeItForEachRequest",
    "requestIdCheck": "1614927872"
}'

{
    "requestId": "1615263370",
    "resultCode": 0,
    "message": "Success",
    "data": {
        "requestId": "1614927872",
        "reference1": "OrderId",
        "reference2": "",
        "resultCode": 0,
        "resultMessage": "Success",
        "totalAmount": 80000,
        "amount": 80000,
        "creditAmount": 0,
        "paymentId": 1234567890,
        "paymentDate": "01-01-1970",
        "paymentMillisTime": 0,
        "billList": [
            {
                "billId": "OrderId",
                "description": "",
                "totalAmount": 80000,
                "repaymentPeriod": 0,
                "extras": {},
                "required": []
            }
        ]
    }
}

curl with PGP encrypt

curl -L -X POST 'https://testing.momo.vn:22446/api/gw_payment/info' -H 'Accept: application/pgp-encrypted' -H 'Content-Type: application/pgp-encrypted' -H 'partner-code: gwpayment' --data-raw '-----BEGIN PGP MESSAGE-----
Version: BCPG v1.65

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=RRuT
-----END PGP MESSAGE-----'

$response

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Version: BCPG v1.65

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Ax4zE0KHvuoxi5gwRB66S05GdQVmVs7UPmnxY6JjbhRZBoyP8jqmrzSHzYKTxkXR
gYdvsz02OZcWQ/Mu/FC0Ewn8/64oHtzGqWPHkNSpW266eaDztGg+KxgiA5KlLKQL
95F1WyoPLom3Hyo8ALTTmloP9Kv0DXIR3qFYcB2ASVtYDS7oN70VbSGZj77Uda7a
Lz93PkFzZSQaUuFSqXEF/3gOWFwRzTSU+dDNm/czoeBRAqk7VCl/52g+gxZawiaP
THcgq3cywEwULVY9FjMU3tnfwa9cH1cz+e/bnY+1fnf82ViIYacsFLsryELg3xwm
CenjbGvsCcqIIDe2kU6XgYPDf9CvTMJyjpF7752gtym2oxdVYC9TlGE0Lw==
=/oYH
-----END PGP MESSAGE-----

Attributes

Request params

Name Type R L Description Error code
requestId String(50) R L1 Unique string for each request 2003
requestIdCheck String(50) R L1 This is the requestId to check, it's the same as the requestId in INIT API 2008

Response params

Name Type R L Description
requestId String R L1 Same with request
referenceId String R L1 Unique for each response
resultCode String R L1 Request's result code
message String R L1 Result message
data Object R L1 Object include below information
requestId String R L2 The same with requestId in INIT API
reference1 String R L2 The same with reference1 in INIT API
reference2 String L2 The same with reference2 in INIT API
totalAmount Number R L2 The same with totalAmount in INIT API
amount Number R L2 Paid amount in MoMo app
creditAmount Number R L2 Total credit amount user has payment (Depend on partner)
paymentId Number R L2 Payment transaction id
paymentDate String R L2 Payment time in MService system
paymentMillisTime Number R L2 Current milli second of payment date
billList Json Object R L1
billId String R L2 Bill id, in multi-bill case billId is 1 reference1 has multi billId
amount Number R L2 Amount Momo money source
creditAmount Number R L2 Credit amount
extras Json Object L2 Extras info

3. Callback

The following endpoint sends the payment results to the partner via URL, please validate the encryptedData param to make sure the info received is correct.

SERVER CLIENT END POINT METHOD
PARTNER MoMo app/web PARTNER-CALLBACK-URL?data=QUERY-STRING-BASED64 GET

Sample request

https://sample.partner.url/callback?data=VGhpcyBpcyBzYW1wbGUgYmFzZWQ2NA==

This data param will encrypted Base64 before send to partner in query string

{
  "requestId": "1511347353577",
  "referenceId": "1511347353577",
  "reference1": "REF1_INFOISPLAYINMOOMOAPP",
  "reference2": "REF2_OPTIONALBILLID",
  "resultCode": 0,
  "paymentId": 1511347353577,
  "amount": 10000,
  "creditAmount": 0,
  "encryptedData": "B3ABE5D8C69B38733AD57EA75E83BCAE42BBBBAC75E3A5445862ED2F8A2CD677"
}

Query string with these parameters:

Name Type R L Description
requestId String R L1 Same with requestId in Init Payment request
reference1 String R L1 Same with reference1 inInit Payment request
reference2 String L1 Same with reference2 in Init Payment request
resultCode Number R L1 Payment Result code
paymentId Number R L1 Payment ID in MoMo
amount Number R L1 Payment amount
creditAmount Number R L1 Payment credit amount
encryptedData String R L1 All field's values will be encryted by SHA256.
Notes: all fields values are appended together without space.

The encryptedData is:

SHA256(
    <value_of_requestId_field>
    <value_of_reference1_field>
    <value_of_reference2_field>
    <value_of_resultCode_field>
    <value_of_paymentId_field>
    <value_of_amount_field>
    <value_of_creditAmount_field>
    <value_of_checksumKey_field>
)

4. Payment Notification

The following endpoint push the payment results to partner.

Partner returns the HTTP Status 200 to ensure received payment info.

SERVER CLIENT END POINT METHOD HEADERS
PARTNER MOMO notifyUrl in Init Payment request POST Content-Type application/pgp-encrypted
Accept application/pgp-encrypted

Sample

Sample Request

{
  "requestId": "2300699797",
  "referenceId": "REF1_EACTJNDPWP",
  "reference1": "REF1_EACTJNDPWP",
  "reference2": "REF2_WRATJNDPWP",
  "amount": 999000,
  "creditAmount": 0,
  "resultCode": 0,
  "resultMessage": "Success",
  "paymentId": 2300699797,
  "paymentDate": "2019-04-01T10:49:45+07:00",
  "paymentMillisTime": 1560233760000
}

Sample response

{
  "requestId": "2300699797",
  "resultCode": 0,
  "resultMessage": "Success",
  "referenceId": "MS_12375894762"
}

Attributes

Request Params

Name Type R L Description
requestId String(50) R L1 Unique String for each request
reference1 String(50) R L1 It depends on partner
reference2 String(50) L1 It depends on partner
amount Number R L1 Total paid amount
creditAmount Number R L1 Credit amount
resultCode Number R L1 Result of payment transaction
resultMessage String(50) L1 Result message, description for resultCode
paymentId Number R L1 Unique number for each payment request
paymentDate String(50) R L1 Payment date, format: YYYY-MM-DDThh:mm:ssTZD
paymentMillisTime Number R L1 UNIX time for payment date

Response Params

Name Type R L Description
requestId String(50) R L1 Same with request
referenceId String(50) R L1 Unique for each response
resultCode Number R L1 Result code, partner return it based on Result Code
resultMessage String(100) R L1 Result message

5. Result Code

Payment Gateway uses conventional MoMo result code to indicate the success or failure of an API request.

Code Result message API Description
0 SUCCESS All The request perform success
2 INVALID_ENCRYPT_DATA All Error when encrypt data
4 INVALID_WALLET_ID PAYMENT-NOTIFY
8 DUPLICATE_REQUEST_ID All The requestId field for each transaction is unique.
9 INVALID_PARTNER_CODE All The partner-code in Request Header, MoMo will be provide.
1001 INSUFFICIENT_FUNDS PAYMENT-NOTIFY CHECK-INFO Error when payment in MoMo app, the wallet is insufficient funds
1004 WALLET_CAP_EXCEEDED PAYMENT-NOTIFY CHECK-INFO Error when payment in MoMo app, the wallet cap exceeded
2001 INVALID_CLIENT INIT CHECK-INFO The client field invalid
2002 INVALID_REFERENCE_1 INIT CHECK-INFO The reference1 field invalid
2003 INVALID_REQUEST_ID INIT CHECK-INFO The requestId field invalid
2004 INVALID_CHECKSUM_KEY INIT CHECK-INFO The checksumKey field invalid
2005 INVALID_ACCOUNT_INFO INIT CHECK-INFO The accountInfo field invalid
2006 INVALID_TOTAL_AMOUNT INIT CHECK-INFO PAYMENT The totalAmount value invalid
2007 INVALID_BILL_TOTAL_AMOUNT INIT CHECK-INFO The totalAmount in bill info not equal totalAmount outside
2008 INVALID_CHECK_REQUEST_ID CHECK-INFO The requestIdCheck field invalid
2009 TRANSACTION_EXPIRED CHECK-INFO CALL-BACK The init transaction expired
2010 TRANSACTION_NOT_FOUND CHECK-INFO The transaction not found
2011 TRANSACTION_CANCELED_BY_USER CHECK-INFO The user cancel transaction in MoMo web
2013 INVALID_BILL_INFO INIT
2014 OVER_TRANS_IN_MONTHS INIT MoMo server check number trans in months
2015 OVER_TRANS_IN_DAYS INIT MoMo server check number trans in days