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If the customer agrees to save the card, and proceed the successful payment then the IPS Assist generates a token - a unique card identifier that is stored in the system.
After the customer completes the payment for the order, a message with the payment parameters can be sent to the server of the merchant using the HTTP POST or SOAP method (for more details, see section 3.5 of the document «Setting up the technical interaction with IPS Assist») or the merchant can request the payment results by calling the orderresult web service.
