After the old card is replaced with a new card, the card number has changed, so it is necessary to change the installment card number in order to deduct the money in time.

Card number usually refers to the number of bank cards, that is, the number of hard cards issued by banks, which is the transaction number issued by the People's Bank of China in commercial banks. There is a unified regulation on the transaction number between commercial banks, and the transaction number of each bank is different. The credit card numbers are 16 and 19. When we apply for a new credit card, the bank will associate the new credit card number with the bank account number and cancel our old bank credit card number.