Defining a different amount for the first n installments

You wish to set up a recurring payment for which the amount of the first installment(s) would differ from the ones configured by the vads_sub_amount field.

Example: define a recurring payment with the first 3 installments equal to EUR 45.25,and the remaining installments equal to EUR 75.90.

To do so:

Use the fields required for your use case (recurring payment with a fixed date and amount) to create your payment form.

Use the fields below:

Field name	Description	Value
vads_sub_init_amount_number	Number of installments to which will be applied the amount defined by vads_sub_init_amount	3
vads_sub_init_amount	Amount of the first installments. The number of the first installments is defined by vads_sub_init_amount_number.	2500
vads_sub_amount	Amount of each installment except the ones that will be eventually defined by vads_sub_init_amount_number	3000
vads_sub_currency	Currency used for all of the installments.	E.g.: 978 for euro (EUR)

The vads_sub_init_amount and vads_sub_amount fields cannot be set to 0.

To define a recurring payment where the 3 first months are free, all you need to do is set the start date (vads_sub_effect_date) to 3 months later.

Form example:

<form method="POST" action="https://scelliuspaiement.labanquepostale.fr/vads-payment/">
<input type="hidden" name="vads_action_mode" value="INTERACTIVE" />
<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_cust_country" value="FR" /> 
<input type="hidden" name="vads_cust_email" value="exemple@gmail.com" />
<input type="hidden" name="vads_cust_first_name" value="Paul" /> 
<input type="hidden" name="vads_cust_last_name" value="Juve" /> 
<input type="hidden" name="vads_cust_title" value="M." /> 
<input type="hidden" name="vads_page_action" value="REGISTER_SUBSCRIBE" /> 
<input type="hidden" name="vads_payment_config" value="SINGLE" /> 
<input type="hidden" name="vads_site_id" value="91335531" /> 
<input type="hidden" name="vads_trans_date" value="20190716080441" /> 
<input type="hidden" name="vads_trans_id" value="362812" /> 
<input type="hidden" name="vads_validation_mode" value="0" /> 
<input type="hidden" name="vads_sub_currency" value="978" />
<input type="hidden" name="vads_sub_init_amount_number" value="3" />
<input type="hidden" name="vads_sub_init_amount" value="2500" />
<input type="hidden" name="vads_sub_amount" value="3000" />
<input type="hidden" name="vads_version" value="V2" />
<input type="hidden" name="signature" value="G6oZchxNT+ySm7YQ/zvQvfgxmOmubvZ0lPwFKKVUSyI="/>
<input type="submit" name="payer" value="Pay"/>
</form>

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Defining a different amount for the first n installments