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If the customer refuses to save the card for future payments then all his payments actions remain as standard. By next payments, the customer will be asked again to save the card. At the request of the customer, the merchant in the Personal Account can assign the record with his number (CustomerNumber) the status of "Deny", which excludes the appearance of new offers to save the card for this customer in the future.
If the customer agrees to save the card, then to perform the next payment he will be prompted to enter only the CVC2 code, all other parameters of the card are automatically filled. Of course, for security reasons the card number is displayed on the screen using a mask.
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