Integration Guide

Merchant Hosted Integration

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The pre_authorize parameter is used to pre-authorize payments using the Merchant Hosted Checkout integration with the _payment API.

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Note:

You need to activate the Pre-Authorize Payments before you start using this integration. Contact your PayU Key Account Manager (KAM) to activate Pre-Authorize Payments.

Step 1: Post the Pre-Auth transaction request

Post the additional parameters for with the Pre-Authorization using the Merchant Hosted Checkout. For complete list of parameters, refer to Pre-Authorize Payment for the complete list parameters with Try It experience.

Environment

Environment

Test Environmenthttps://test.payu.in/_payment
Production Environmenthttps://secure.payu.in/_payment

The pre_authorize parameter as specified is used to pre-authorize payments using the Merchant Hosted Checkout integration with the _payment API.

ParameterDescriptionExample
key
mandatory		StringMerchant key provided by PayU during onboarding.
txnid
mandatory		StringThe transaction ID is a reference number for a specific order that is generated by the merchant.
amount mandatoryStringThe payment amount for the transaction.
productinfo mandatoryStringA brief description of the product.
firstname mandatoryString The first name of the customer.Ashish
email
mandatory		StringThe email address of the customer.
phone
mandatory		StringThe phone number of the customer.
pg
mandatory		String The pg parameter determines which payment tabs will be displayed on the PayU page. For cards, 'CC' will be the value. CC
bankcode mandatoryString Each payment option is identified with a unique bank code at PayU. The merchant must post this parameter with the corresponding payment option’s bank code value in it. For more information, refer to Card Type Codes and Supported Banks for Cards. AMEX
ccnum
mandatory		String Use 13-19 digit card number for credit/debit cards (15 digits for AMEX, 13-19 for Maestro) and validate with LUHN algorithm. Refer to Card Number Formats and display error message on invalid input.5123456789012346
ccname mandatoryString This parameter must contain the name on card – as entered by the customer for the transaction.Ashish Kumar
ccvv
mandatory		String Use 3-digit CVV number for credit/debit cards and 4-digit security code (4DBC/CID) for AMEX cards. Validate with BIN API.123
ccexpmon mandatoryString This parameter must contain the card’s expiry month – as entered by the user for the transaction. It must always be in 2 digits or in MM format. For months 1-9, this parameter must be appended with 0 – like 01, 02…09. For months 10-12, this parameter must not be appended – It should be 10,11 and 12 respectively.10
ccexpyr
mandatory		String This parameter must contain the card’s expiry year – as entered by the customer for the transaction. It must be of four digits.2021
furl
mandatory		StringThe success URL, which is the page PayU will redirect to if the transaction is successful.
surl
mandatory		StringThe Failure URL, which is the page PayU will redirect to if the transaction is failed.
pre_authorize
mandatory for Pre-Auth		This parameter is set to 1 to pre-authorize payment using PayU Hosted Checkout.
hash
mandatory		StringIt is the hash calculated by the merchant. The hash calculation logic is:
sha512(key|txnid|amount|productinfo|firstname|email|udf1|udf2|udf3|udf4|udf5||||||SALT)
address1
optional		String The first line of the billing address.
For Fraud Detection: This information is helpful when it comes to issues related to fraud detection and chargebacks. Hence, it is must to provide the correct information.
address2
optional		String The second line of the billing address.
city
optional		String The city where your customer resides as part of the billing address.
state
optional		String The state where your customer resides as part of the billing address,
country
optional		String The country where your customer resides.
zipcode
optional		String Billing address zip code is mandatory for the cardless EMI option.
Character Limit-20
udf1
optional		String User-defined fields (udf) are used to store any information corresponding to a particular transaction. You can use up to five udfs in the post designated as udf1, udf2, udf3, udf4, udf5.
udf2
optional		String User-defined fields (udf) are used to store any information corresponding to a particular transaction. You can use up to five udfs in the post designated as udf1, udf2, udf3, udf4, udf5.
udf3
optional		String User-defined fields (udf) are used to store any information corresponding to a particular transaction.
udf4
optional		String User-defined fields (udf) are used to store any information corresponding to a particular transaction.
udf5
optional		String User-defined fields (udf) are used to store any information corresponding to a particular transaction.

Hashing

You must hash the request parameters using the following hash logic:

sha512(key|txnid|amount|productinfo|firstname|email|udf1|udf2|udf3|udf4|udf5||||||SALT)

For more information, refer to Generate Hash.

Sample request

curl --request POST \
     --url 'https://test.payu.in/_payment?form=2' \
     --header 'Content-Type: application/x-www-form-urlencoded' \
     --header 'accept: text/plain' \
     --data key=JPM7Fg \
     --data pg=CC \
     --data bankcode=CC \
     --data pre_authorize=1 \
     --data surl=https://test-payment-middleware.payu.in/simulatorResponse \
     --data furl=https://test-payment-middleware.payu.in/simulatorResponse \
     --data txnid=ypskjfdaaksdjfh \
     --data amount=10000 \
     --data productinfo=iPhone \
     --data firstname=Ashish \
     --data [email protected] \
     --data phone=9889XXXXXX \
     --data ccnum=512*******012346 \
     --data ccname=Ashish \
     --data ccexpmon=11 \
     --data ccexpyr=2025 \
     --data ccvv=123 \
     --data hash=d99f230c19d781016fa64c57f976d0ec8ff3761fe5d9d6448933cf46d7177db6fb7b370e551e39dd37f2045a2a761f9065f8462838bbaad22963c083c84f9ced

Step 2: Check the response from PayU

Hash validation logic for payment response (Reverse Hashing)

While sending the response, PayU takes the exact same parameters that were sent in the request (in reverse order) to calculate the hash and returns it to you. You must verify the hash and then mark a transaction as a success or failure. This is to make sure the transaction has not tampered within the response.

The order of the parameters is similar to the following code block:

sha512(SALT|status||||||udf5|udf4|udf3|udf2|udf1|email|firstname|productinfo|amount|txnid|key)

Sample response

The formatted sample response body is similar to the following, and you need to look for the following parameters:

  • PG_TYPE: CC PG
  • bankcode: CC
  • unamappedstatus: auth
  {
  "mihpayid": "403993715531065775",
  "mode": "CC",
  "status": "success",
  "unmappedstatus": "captured",
  "key": "JPM7Fg",
  "txnid": "ypskjfdaaksdjfh",
  "amount": "10000.00",
  "cardCategory": "domestic",
  "discount": "0.00",
  "net_amount_debit": "10000",
  "addedon": "2024-02-26 07:20:56",
  "productinfo": "iPhone",
  "firstname": "Ashish",
  "lastname": "",
  "address1": "",
  "address2": "",
  "city": "",
  "state": "",
  "country": "",
  "zipcode": "",
  "email": "[email protected]",
  "phone": "9889843845",
  "udf1": "",
  "udf2": "",
  "udf3": "",
  "udf4": "",
  "udf5": "",
  "udf6": "",
  "udf7": "",
  "udf8": "",
  "udf9": "",
  "udf10": "",
  "hash": "00f188fdda2d60d418b147e7dce3a6ead172cf760a95a4df09b763f7627c01d867127e022de97841f1fe41cecb420b12b482fd8b68aaf66476b840bdfe82ca3c",
  "field1": "261005309469848160",
  "field2": "724760",
  "field3": "10000.00",
  "field4": "",
  "field5": "00",
  "field6": "02",
  "field7": "AUTHPOSITIVE",
  "field8": "AUTHORIZED",
  "field9": "Transaction is Successful",
  "payment_source": "payu",
  "PG_TYPE": "CC-PG",
  "bank_ref_num": "261005309469848160",
  "bankcode": "CC",
  "error": "E000",
  "error_Message": "No Error",
  "cardnum": "XXXXXXXXXXXX2346",
  "cardhash": "This field is no longer supported in postback params.",
  "splitInfo": "{\"splitStatus\":\"splitNotReceived\",\"splitSegments\":[]}"
}

Step 3: Capture a Pre-authorized payment

To capture a pre-authorized payment, use the following command. After the API command is successful, the transaction would be captured and settled to you.

Environment

Environment

Test Environmenthttps://test.payu.in/merchant/postservice?form=2
Production Environmenthttps://info.payu.in/merchant/postservice?form=2

Sample request

curl --location --request POST 'https://info.payu.in/merchant/postservice.php?form=2' \ 
--header 'Content-Type: application/x-www-form-urlencoded' \ 
--form 'key="JF***g"' \ 
--form 'command="capture_transaction"' \ 
--form 'hash="67411736ab98c59522492a12751a6015c41b87764019f9dc14052690c2c7af9095d31002fc109dcf3596c2f38792d56db6f6207b1989010f2adf51c144fa3019"' \ 
--form 'var1="15246574846"' \ 
--form 'var2="authorizeTransaction123"' \ 
--form 'var3="1"'

Sample response

{ 
    "status": 1, 
    "msg": "Capture Request Queued", 
    "request_id": "Request ID", 
    "bank_ref_num": "Bank Reference Number" 
}

Step 3: Check Action Status

  • To check the status of the transaction, use the verify_payment API. For more information, refer to Verify Payment API
  • To check the status of the Auth Request and then Capture Request sent, use the check_action_status API. For more information, refer to Check Refund Status API with Request ID.

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Note:

Sample response

Failure scenario

{ 
    "status": 1, 
    "msg": "1 out of 1 Transactions Fetched Successfully", 
    "transaction_details": { 
        "18315176038": { 
            "12806028149": { 
                "mihpayid": "18315176038", 
                "bank_ref_num": "6969235068376733806127", 
                "request_id": "12806028149", 
                "amt": "2.00", 
                "mode": "CC", 
                "action": "auth", 
                "token": "", 
                "status": "SUCCESS", // Auth is successful 
                "bank_arn": null, 
                "settlement_id": null, 
                "amount_settled": null, 
                "UTR_no": null, 
                "value_date": null, 
                "refund_mode": "-" 
            }, 
            "12806028151": { 
                "mihpayid": "18315176038", 
                "bank_ref_num": null, 
                "request_id": "12806028151", 
                "amt": "1.00", 
                "mode": "CC", 
                "action": "capture", 
                "token": "Cap_18315176038_01", 
                "status": "QUEUED", // Capture is in queue statue  
                "bank_arn": null, 
                "settlement_id": null, 
                "amount_settled": null, 
                "UTR_no": null, 
                "value_date": null, 
                "refund_mode": "-" 
            } 
        } 
    }

Success scenario

{ 
    "status": 1, 
    "msg": "1 out of 1 Transactions Fetched Successfully", 
    "transaction_details": { 
        "18283829909": { 
            "12781896792": { 
                "mihpayid": "18283829909", 
                "bank_ref_num": "6966342376826003206121", 
                "request_id": "12781896792", 
                "amt": "1031.00", 
                "mode": "CC", 
                "action": "auth", 
                "token": "", 
                "status": "SUCCESS", 
                "bank_arn": null, 
                "settlement_id": null, 
                "amount_settled": null, 
                "UTR_no": null, 
                "value_date": null, 
                "refund_mode": "-" 
            }, 
            "12781896793": { 
                "mihpayid": "18283829909", 
                "bank_ref_num": "6969233152136917105030", 
                "request_id": "12781896793", 
                "amt": "426.00", 
                "mode": "CC", 
                "action": "capture", 
                "token": "PZT2310070446VG2VC01", 
                "status": "success", // Auth is successful 
                "bank_arn": null, 
                "settlement_id": "202310111115", 
                "amount_settled": "418.7100", 
                "UTR_no": null, 
                "value_date": null, 
                "refund_mode": "-" 
            }, 
            "12806008126": { 
                "mihpayid": "18283829909", 
                "bank_ref_num": null, 
                "request_id": "12806008126", 
                "amt": "605.00", 
                "mode": "CC", 
                "action": "cancel", 
                "token": "825816e28afb809be802c7b", 
                "status": "SUCCESS", // Capture is successful 
                "bank_arn": null, 
                "settlement_id": null, 
                "amount_settled": null, 
                "UTR_no": null, 
                "value_date": null, 
                "refund_mode": "-" 
            } 
        } 
    } 
}

Updated about 1 month ago