(1) Credit card is not activated;
(2) Incorrect transaction password input;
(3) The magnetic stripe on the back of the credit card may be demagnetized and damaged;
(4) The credit card limit is insufficient, and the consumption exceeds your current available credit limit;
(5) The card swiping machine fails or the communication line is busy;
(6) The card swiping machine does not have the same logo as the card.