3.12. /api/v2/preauth-form

Introduction

Preauth-form is initiated through HTTPS POST request by using URLs and the parameters specified below. Use SHA-1 for authentication. See Statuses.

API URLs

Integration

Production

https://sandbox.denumtech.ru/paynet/api/v2/preauth-form/ENDPOINTID

https://gate.denumtech.ru/paynet/api/v2/preauth-form/ENDPOINTID

https://sandbox.denumtech.ru/paynet/api/v2/preauth-form/group/ENDPOINTGROUPID

https://gate.denumtech.ru/paynet/api/v2/preauth-form/group/ENDPOINTGROUPID

Request Parameters

Note

Request must have content-type=application/x-www-form-urlencoded.
Acquirer can redefine the necessity of some fields so they become required instead of optional.
Leading and trailing whitespace in input parameters will be omitted.

Parameter Name

Description

Value

client_orderid

Unique order identifier assigned by Connecting Party.
Necessity: Required
Type: String
Length: 128

order_desc

Brief order description.
Necessity: Required
Type: String
Length: 64k

amount

Amount to be charged. The amount has to be specified in the highest units with . delimiter. For instance, 10.5 for USD means 10 US Dollars and 50 Cents.
Necessity: Required
Type: Numeric
Length: 10

currency

Currency the transaction is charged in (See: Currency codes). Sample values are: USD for US Dollar EUR for European Euro.
Necessity: Required
Type: String
Length: 3

address1

Payer’s address line 1.
Necessity: Required
Type: String
Length: 50

city

Payer’s city.
Necessity: Required
Type: String
Length: 50

zip_code

Payer’s ZIP code.
Necessity: Required
Type: String
Length: 10

country

Payer’s country. Please see Country codes for a list of valid country codes.
Necessity: Required
Type: String
Length: 2

phone

Payer’s full international phone number, including country code.
Necessity: Required
Type: String
Length: 15

email

Payer’s e-mail address.
Necessity: Required
Type: String
Length: 50

ipaddress

Payer’s IP address, included for fraud screening purposes.
Necessity: Required
Type: String
Length: 45

control
Checksum generated by SHA-1. Control string is represented as concatenation of the following parameters:
1. <ENDPOINTID | ENDPOINTGROUPID> (See: Request URL).
2. Request parameter: client_orderid.
4. Request parameter: amount in minor units (if sent).
4. Request parameter: email.
5. merchant_control (Control key assigned to Connecting Party account in the Denumtech gateway system).
Necessity: Required
Type: String
Length: 40

first_name

Payer’s first name.
Necessity: Required
Type: String
Length: 50

last_name

Payer’s last name.
Necessity: Required
Type: String
Length: 50

state

Payer’s state. (two-letter state code). Please see Mandatory State codes for a list of valid state codes. Required for USA, Canada and Australia.
Necessity: Conditional
Type: String
Length: 2

redirect_url
URL, where the Payer is redirected to upon completion of the transaction. Please note that redirection is performed in any case, no matter whether transaction is approved, declined in any other final status.
Connecting Party must not use the parameters come along with the redirect HTTP Request to treat the status of the transaction. Instead Connecting Party can utilize server_callback_url or status API command. Pass http://https://doc.denumtech.ru/ if you have no need to return payer anywhere. Use either redirect_url or combination of redirect_success_url and redirect_fail_url, not both.
Necessity: Optional
Type: String
Length: 1024

redirect_success_url
URL, where the Payer is redirected to when transaction status is approved (See status list).
Connecting Party must not use the parameters come along with the redirect HTTP Request to treat the status of the transaction. Instead Connecting Party can utilize server_callback_url or status API command. Otherwise put http://https://doc.denumtech.ru/ if there is no need to redirect Payer anywhere. Use either combination of redirect_success_url and redirect_fail_url or redirect_url, not both.
Necessity: Optional
Type: String
Length: 1024

redirect_fail_url
URL, where the Payer is redirected to when transaction status is not approved (See status list).
Connecting Party must not use the parameters come along with the redirect HTTP Request to treat the status of the transaction. Instead Connecting Party can utilize server_callback_url or status API command. Pass http://https://doc.denumtech.ru/ if there is no need to redirect Payer anywhere. Use either combination of redirect_fail_url and redirect_success_url or redirect_url, not both.
Necessity: Optional
Type: String
Length: 1024

ssn

Last four digits of the Payer’s social security number.
Necessity: Optional
Type: Numeric
Length: 32

birthday

Payer’s date of birth, in the format YYYYMMDD.
Necessity: Optional
Type: Numeric
Length: 8

cell_phone

Payer’s full international cell phone number, including country code.
Necessity: Optional
Type: String
Length: 15

site_url

The URL of the E-commerce entity, where the payment is originated from.
Necessity: Optional
Type: String
Length: 128

server_callback_url
URL, where the transaction status is sent to.
Connecting Party may use server callback URL for custom processing of the transaction completion, e.g. to collect payment data in the Connecting Party’s information system. For the list of parameters which come along with server callback to server_callback_url refer to Connecting Party callback parameters.
Necessity: Optional
Type: String
Length: 1024

preferred_language

Payer’s two-letter language code for multi-language payment-forms.
Necessity: Optional
Type: String
Length: 2

merchant_form_data

Parameters sent in MERCHANT_FORM_DATA API parameter are parsed into macros with the same name, the parameter is url-encoded, example: testparam%3Dtest1%26mynewparam%3Dtest2 and is parsed into $MFD_testparam = test1 and $MFD_mynewparam = test2 macros in the form. Parameter name characters[a-zA-Z0-9], parameter value characters[a-zA-Z0-9], control characters [=&], 2MB max size. For example, this parameter can be used to display payment form in light/dark mode depending on the value passed by Connecting Party (e.g. pass merchant_form_data=theme%3Ddark in request and $MFD_theme macro placeholder on payment form will be changed to dark.
Necessity: Optional
Type: String
Length: 128

minimum_transaction_amount

This parameter can be used to limit the minimum transaction amount, if transaction amount is submitted by Payer on the form. Contact support manager to enable this feature. Value format is the same as in the amount parameter.
Necessity: Optional
Type: Numeric
Length: 10

maximum_transaction_amount

This parameter can be used to limit the maximum transaction amount, if transaction amount is submitted by Payer on the form. Contact support manager to enable this feature. Value format is the same as in the amount parameter.
Necessity: Optional
Type: Numeric
Length: 10

customer_level

Customer level in CMS system
Necessity: Optional
Type: Varchar
Length: 32

customer_id

Customer ID in CMS system. Necessity becomes required if transaction goes via CMS (PNE)
Necessity: Optional
Type: Int
Length: 10

merchant_customer_identifier

Merchant Customer ID in CMS system. Necessity becomes required if transaction goes via CMS (CRM)
Necessity: Optional
Type: Varchar
Length: 64

preferred_language

Payer’s two-letter language code for multi-language payment forms.
Necessity: Optional
Type: String
Length: 2

recurring-payment-id

Payer’s tokenized cardholder’s data ID, referred as Recurring Payment ID (RPI). Recurring Payment ID creation is initiated through HTTPS POST request by using URLs and the parameters specified below. Use OAuth RSA-SHA256 for authentication.
Necessity: Conditional
Type: Long

card-ref-id

Card reference ID used in subsequent recurring payments. Card reference ID creation is initiated through HTTPS POST request by using URLs and the parameters specified below. Use OAuth RSA-SHA256 for authentication.
Necessity: Conditional
Type: Long

Response Parameters

Note

Response has Content-Type: text/html;charset=utf-8 header. All fields are x-www-form-urlencoded, with (0xA) character at the end of each parameter’s value.

Response Parameters

Description

type

The type of response. May be async-response, validation-error, error. If type equals validation-error or error, error-message and error-code parameters contain error details.

paynet-order-id

Order id assigned to the order by Denumtech.

merchant-order-id

Connecting Party order id.

serial-number

Unique number assigned by Denumtech server to particular request from the Connecting Party.

error-message

If status is error this parameter contains the reason for decline or error details.

error-code

The error code is case of error status.

redirect-url

The URL to the page where the Connecting Party should redirect the client’s browser. Connecting Party should send HTTP 302 redirect, see General Payment-form Process Flow.

Request Example

POST /paynet/api/v2/preauth-form/39539 HTTP/1.1
User-Agent: curl/7.83.0
Accept: */*
Content-Length: 314
Content-Type: application/x-www-form-urlencoded
Connection: close

client_orderid=902B4FF5
&order_desc=Test Order Description
&first_name=John
&last_name=Smith
&ssn=1267&birthday=19820115
&address1=100 Main st
&city=Seattle
&state=WA
&zip_code=98102
&country=US
&phone=+12063582043
&cell_phone=+19023384543
&amount=69
&email=john.smith@gmail.com
&currency=USD
&ipaddress=65.153.12.232
&site_url=https://doc.denumtech.ru/
&credit_card_number=4538977399606732
&card_printed_name=CARD HOLDER
&expire_month=12
&expire_year=2099
&cvv2=123
&purpose=user_account1
&redirect_url=http://sandbox.denumtech.ru/doc/dummy.htm
&server_callback_url=https://httpstat.us/200
&merchant_data=VIP customer
&merchant_form_data=testparam%3Dtest1%26mynewparam%3Dtest2
&control=b7ba0b0ce36fda192c3772e045520c7a9cb5e442
&preferred_language=en

Success Response Example

HTTP/1.1 200 OK
Server: server
Date: Thu, 13 Oct 2022 09:54:53 GMT
Content-Type: text/html;charset=utf-8
Connection: close
Vary: Accept-Encoding
X-XSS-Protection: 1
X-Content-Type-Options: nosniff
Strict-Transport-Security: max-age=31536000
Content-Language: en-US
Strict-Transport-Security: max-age=31536000
Content-Length: 280

type=async-form-response
&serial-number=00000000-0000-0000-0000-000002ddb0d3
&merchant-order-id=Test
&paynet-order-id=6863103
&redirect-url=https%3A%2F%2Fsandbox.denumtech.ru%2Fpaynet%2Fform%2Finit%2FBB587546567A31587163597A68633370432F78675258396E6F78367975715973596936522B594B4F646168553D

Fail Response Example

HTTP/1.1 200 OK
Server: server
Date: Thu, 13 Oct 2022 09:58:28 GMT
Content-Type: text/html;charset=utf-8
Connection: close
Vary: Accept-Encoding
X-XSS-Protection: 1
X-Content-Type-Options: nosniff
Strict-Transport-Security: max-age=31536000
Content-Language: en-US
Strict-Transport-Security: max-age=31536000
Content-Length: 170

type=validation-error
&serial-number=00000000-0000-0000-0000-000002ddb0d4
&error-message=Project+with+currency+RUB+does+not+apply+request+with+currency+USD
&error-code=16

Postman Collection

Request Builder

endpointid or groupid

input ENDPOINTID or ENDPOINTGROUPID

client_orderid

make it or use internal invoice ID

order_desc
first_name
last_name
ssn
birthday
address1
city
state
zip_code
country
phone
cell_phone
amount
email
currency
ipaddress
site_url
purpose
merchant_control

input Control Key

redirect_url
redirect_success_url
redirect_fail_url
server_callback_url
merchant_data
cardrefid
maximum-transaction-amount
minimum-transaction-amount
merchant_form_data
preferred_language

String to sign
Signature