The Axepta Online solution allows you to tokenize card numbers as "PCNr" (Pseudo Card Number) and IBANs as "PBAN" (Pseudo Bank Account Number).
A token is a random number generated by the payment solution that represents a card or IBAN number. The token is composed of random characters whose and the 3 last 3 digits correspond to those of the real card or IBAN number.
How to recover the token ?
The merchant can recover receives the token at the time in response of a first payment (tokenization with payment) or of a request for information an account verification (tokenization without payment).
This token is filled in a parameter of the notification URL (URLNotify) which indicates to the merchant the status of the transaction.
The merchant can then save store the token and reuse reuses it later, under the condition of the prior only if the merchants previously received the agreement of the customer/cardholder (Opt-in). The merchant is then able to initiate payments from with the stored tokens already saved (examples: one click, recurring payment...).
Technical interpretation
The JSON Card object, returned in response to a payment request, contains the card number of the tokenized cardholder.
Detail of the object : card:response EN - Documentation BNP Paribas - Axepta
It is not necessary to be PCI DSS to store this data.