The Do Not Honor authorization error occurs when submitting a payment with a debit or credit card. It means that your bank is not willing to accept the transaction.
The most frequent reasons for this error include:
The card is expired
The card details are incorrect
Online transactions are prohibited for the card
The other reason might be in a foreign transaction, meaning that you are attempting to make a transaction to a different country than your card is issued in.
The exact reason may vary. Thus, for the fastest solution, kindly contact your bank - they will provide you with the exact reason for the error. Alternatively, you can try using other payment methods, available in your cart.