Creating an immediate payment

In the immediate payment mode, the buyer pays the total amount for the purchase at once.

The payment is captured by the bank on the same day.

Use all the fields presented in the table below to create your payment form.

Field name	Description	Format	Value
vads_site_id	Shop ID	n8	E.g.: 12345678
vads_ctx_mode	Mode of interaction with the payment gateway	enum	`TEST`or`PRODUCTION`
vads_trans_id	Transaction number. Must be unique within the same day (from 00:00:00 UTC to 23:59:59 UTC). Warning: this field is not case sensitive.	an6	E.g.: xrT15p
vads_trans_date	Date and time of the payment form in UTC format.	n14	Respect the YYYYMMDDHHMMSS format E.g.: 20200101130025
vads_amount	Payment amount in the smallest currency unit (cents for euro).	n..12	E.g.: 4525 for EUR 45.25
vads_currency	Numeric currency code to be used for the payment, in compliance with the ISO 4217 standard (numeric code).	n3	E.g.: 978 for euro (EUR)
vads_action_mode	Acquisition mode for payment method data	enum	`INTERACTIVE`
vads_page_action	Action to perform	enum	`PAYMENT`
vads_version	Version of the exchange protocol with the payment gateway	enum	V2
vads_payment_config	Payment type	enum	`SINGLE`
vads_payment_cards	Allows to force the card type to be used. It is recommended to provide a different payment button for each payment method on the merchant website. It is recommended not to leave the field empty. See the chapter Managing the payment methods offered to the buyer for more information.	enum	E.g.: CB CVCONNECT MASTERCARD VISA
vads_capture_delay	Delay before capture in the bank.	n..3
vads_validation_mode	Validation mode	n1	0 (Automatic)
signature	Signature guaranteeing the integrity of the requests exchanged between the merchant website and the payment gateway.	ans..44	Compute the value of the field`signature`using all the fields of your form that start withvads_(see chapter Computing the signature).

Value the field vads_payment_config to SINGLE.
Value the field vads_capture_delay to 0.
Value the field vads_validation_mode to 0 for automatic validation (the payment will be automatically captured in the bank).
Value the field vads_currency with the code of the desired currency using the currency table.
Add the fields recommended for increasing chances of frictionless during the payment.
Add optional fields according to your requirements (see chapter Using additional features).

Example of a form for an immediate payment:

<form method="POST" action="https://paiement.systempay.fr/vads-payment/">
<input type="hidden" name="vads_action_mode" value="INTERACTIVE" />
<input type="hidden" name="vads_amount" value="15000" />
<input type="hidden" name="vads_capture_delay" value="0" />
<input type="hidden" name="vads_ctx_mode" value="TEST" />
<input type="hidden" name="vads_currency" value="978" />
<input type="hidden" name="vads_order_id" value="CX-1254" />
<input type="hidden" name="vads_page_action" value="PAYMENT" />
<input type="hidden" name="vads_payment_cards" value="CB" />
<input type="hidden" name="vads_payment_config" value="SINGLE" />
<input type="hidden" name="vads_site_id" value="12345678" />
<input type="hidden" name="vads_trans_date" value="20190626101407" />
<input type="hidden" name="vads_trans_id" value="pt156G" />
<input type="hidden" name="vads_version" value="V2" />
<input type="hidden" name="signature" value="0WaYrONo3L0VZqMcvyVf8vT/g8KfZKJ+1jqiAs3Ehiw="/>
<input type="submit" name="pay" value="Pay"/>
</form>

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Creating an immediate payment