pointOfSaleInformation. emv.cardSequenceNumber

Number assigned to a specific card when two or more cards are associated with the same primary account number.

This value enables issuers to distinguish among multiple cards that are linked to the same account. This value can also act as a tracking tool when the issuer reissues cards. When this value is available, it is provided by the chip reader. When the chip reader does not provide this value, do not include this field in your request.