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UPI One-Time Mandate API - Merchant Hosted

This section describes the request and response parameters with sample request and response for UPI One-Time mandate Intent and Collect flow. For more information on integration, refer to UPI One-Time Mandate.

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Note

Currently, PayU supports UPI One-Time Mandate only for the Seamless integration.

Request Parameters


Parameter

Description

Example

key mandatory

varchar This parameter is the unique Merchant Key provided by PayU for your merchant account.

Your Test Key

txnid mandatory

varchar This parameter is known as Transaction ID (or Order ID). It is the order reference number generated at your (Merchant’s) end. It is an identifier that you (merchant) would use to track a particular order. If a transaction using a particular transaction ID has already been successful at PayU, the usage of the same Transaction ID again would fail. Hence, you must post us a unique transaction ID for every new transaction. Character limit: 25

  • Note*: Ensure that the transaction ID sent to us has not been successful earlier. In case of this duplication, the customer would get an error of ‘duplicate Order ID.’

fd3e847h2

amount
mandatory

float This parameter should contain the payment amount of the particular transaction.

  • Note*: Type-cast the amount to float type

1000

productinfo
mandatory

varchar This parameter should contain a brief product description. It should be a string describing the product.
Character limit: 100

Time Magazine Subscription

firstname
mandatory

varchar Must contain the first name of the customer.
Character limit: 60

Ashish

email
mandatory

varchar Must contain the email of the customer.
This information is helpful when it comes to issues related to fraud detection and chargebacks. Hence, it is a must to provide the correct information. Also, MIS reporting is shared with few issuing banks where email and mobile number is used to keep track of users using SI transactions. Character limit: 50

[email protected]

phone
mandatory

varchar Must contain the phone number of the customer.

This information is helpful when it comes to issues related to fraud detection and chargebacks. Hence, it is must to provide the correct information Also, MIS reporting is shared with few issuing banks where email and mobile number is used to keep track of users using SI transactions.
Character limit: 50

9843176540

surl
mandatory

surL is the acronym for Success URL. This parameter must contain the URL on which PayU will redirect the final response if the transaction is successful.

furl
mandatory

furl is the acronym for for Failure URL. This parameter must contain the URL on which PayU will redirect the final response if the transaction is failed.

pg
mandatory

It defines the payment category for which you wish to perform UPI One-Time Mandate. For UPI, pg= UPI

UPI

bankcode
mandatory

It defines the bank with which you wish to perform UPI using the bank code. Use UPI or INTENT according to the use case.

  • UPI: Used for UPI Collect
  • INTENT: Used for UPI Intent

vpa
mandatory

This parameter contains the customer’s VPA handle. For the list UPI handles supported, refer to UPI Handles

The merchant is advised to check the validity of the VPA through using the VPA Validation API. PayU extends support for the same if required. For more information on using VPA Validation API, refer to  Validate VPA API.

abc@payu

txn_s2s_flow
mandatory

This parameter must be passed with the values as 4 for UPI Intent.

4

pre_authorize
mandatory for Pre-Auth

This parameter is set to1 to pre-authorize payment.

si_Details

This parameter contains the following information in JSON format:

  • paymentStartDate
  • paymentEndDate
    • Example*: {"paymentStartDate":"2024-07-24","paymentEndDate":"2024-07-28"}

{"paymentStartDate":"2024-07-24","paymentEndDate":"2024-07-28"}

hash
mandatory

Hash is a crucial parameter used to ensure that any date is not tampered while redirecting customer from the merchant website to PayU’s payment interface while registration transactions.

It is SHA512 hash generated by encrypting values of merchant key, txnid, amount, productinfo, firstname, email, udf and si_details by merchant salt.

In the case of registration transaction, the formula is used to calculate this hash is similar to the following:
HASH = SHA512(sha512(key\|txnid\|amount\|productinfo\|firstname\|email\|udf1\|udf2\|udf3\|udf4\|udf5\||\||\||SALT))

Sample request

Intent Flow

ample request: 
curl --request POST  

--url https://test.payu.in/_payment  
--header 'accept: text/plain'  
--header 'content-type: application/x-www-form-urlencoded'  
--data key=JPM7Fg  
--data pg=UPI  
--data bankcode=INTENT 
--data txn_s2s_flow=4  
--data txnid=aso6787  
--data siDetails="{"paymentStartDate": "2019-09-01","paymentEndDate": "2019-12-01"}"  
--data pre_authorize=1 \ 
 --data amount=100.00  
--data productinfo=iPhone  
--data firstname=Ashish  
--data [email protected]  
--data phone=9876543210  
--data surl=https://apiplayground-response.herokuapp.com/  
--data furl=https://apiplayground-response.herokuapp.com/  
--data hash=8e8de8a3cf2ba999e16c0ffdb63a645074af4ad1aa0a8d66d81555a119c004e1791173fe6199084f256623664b250d3aeb50fc2c4cfc155e729d8811a157c98b

Collect Flow

curl --request POST  
--url https://test.payu.in/_payment  
--header 'accept: text/plain'  
--header 'content-type: application/x-www-form-urlencoded'  
--data key=JPM7Fg  
--data pg=UPI  
--data bankcode=UPI  
--data vpa=anything@payu  
--data txn_s2s_flow=4  
--data txnid=aso6787  
--data siDetails="{"paymentStartDate": "2019-09-01","paymentEndDate": "2019-12-01"}"  
--data pre_authorize=1 \ 
 --data amount=100.00  
--data productinfo=iPhone  
--data firstname=Ashish  
--data [email protected]  
--data phone=9876543210  
--data surl=https://apiplayground-response.herokuapp.com/  
--data furl=https://apiplayground-response.herokuapp.com/  
--data hash=8e8de8a3cf2ba999e16c0ffdb63a645074af4ad1aa0a8d66d81555a119c004e1791173fe6199084f256623664b250d3aeb50fc2c4cfc155e729d8811a157c98b

Sample response

Intent Flow

Success scenario

For Intent, as part of response, Intent URL is returned. Now, merchant needs to use data received in intentURIData parameter, JSON decode the response and use URL to invoke intent at their end

{
  "metaData": {
    "message": null,
    "referenceId": "c5161bae370de1bd4fb886c6c66567a8",
    "statusCode": null,
    "txnId": "a7440cc636e747b635df",
    "txnStatus": "pending",
    "unmappedStatus": "pending"
  },
  "result": {
    "paymentId": "99900000000001875",
    "merchantName": "Name409208872",
    "merchantVpa": "paytmqr@icici",
    "amount": "10000.00",
    "acsTemplate": "PGh0bWw+PGJvZHk+PGZvcm0gbmFtZT0icGF5bWVudF9wb3N0IiBpZD0icGF5bWVudF9wb3N0IiBhY3Rpb249Imh0dHBzOi8vcHA3OHNlY3VyZS5wYXl1LmluLzY1OWFjNWRhNWUyZjlmNzM1NzhkZWYwYzVjNDM2MWFmOWJhMGVkYmExYjk3NDg2Mjg3ZDI2MzBjZDg1YmU3NWEvaW50ZW50U2VhbWxlc3NIYW5kbGVyLnBocCIgbWV0aG9kPSJwb3N0Ij48aW5..."
    },
    "otpPostUrl": "https://pp78secure.payu.in/ResponseHandler.php"
  }
}

Failure scenario

For Intent, as part of response, Intent URL is returned. Now merchant needs to use data received in intentURIData parameter, JSON decode the response and use URL to invoke intent at their end

Once the transaction is authorised by the customer, PayU will receive confirmation. Same will be passed to the merchant as webhook

{
  "metaData": {
    "message": "Transaction failed due to invalid params shared by the merchant",
    "referenceId": "dde7096af9db932a9fd09b9b4383d8be",
    "statusCode": "E1101",
    "txnId": "0c4931ddee7a4f69227f",
    "txnStatus": "failed",
    "intentURIData": "upi://mandate?pa=payu24@icici&pn=Payu&tr=EZM2024042211452400151942&am=10000.00&cu=INR&orgid=400011&mc=6012&purpose=01&tn=Upi%20Mandate&validitystart=22042024&validityend=21052024&amrule=MAX&Recur=ONETIME&Rev=N&Share=Y&Block=Y&txnType=CREATE&mode=13",
    "unmappedStatus": "failure"
  },
  "result": {}
}

Collect Flow

Success scenario

{ 
   "metaData":{ 
      "message":null, 
      ""referenceId":"c5161bae370de1bd4fb886c6c66567a8", 
      "statusCode":null, 
      ""txnId":"a7440cc636e747b635df", 
      ""txnStatus":"pending", 
      ""unmappedStatus":"pending" 
   }, 
   "result":{ 
      "postToBank":{ 
         "useMethodGet":true 
      }, 
      "issuerUrl":"https://api.payu.in/ public/#/c5161bae370de1bd4fb886c6c66567a8/upiLoader" 
   } 
}

Failure scenarios

{ 
   "metaData":{ 
      "message":"Transaction failed due to invalid params shared by the merchant", 
      "referenceId":"dde7096af9db932a9fd09b9b4383d8be", 
      "statusCode":"E1101", 
      "txnId":"0c4931ddee7a4f69227f", 
      "txnStatus":"failed", 
      "unmappedStatus":"failure" 
   }, 
   "result":{ 
       
   } 
}