Normally, credit card charges are authorized by the payment processor at the time of purchase. When payment is refused and the account contains sufficient funds, the reason is usually an invalid card number or an expired card. You can view cardsʼ validation status in the Customer list.
To view credit cardsʼ validation status:
In the Customer list, choose Credit Card from the View menu.
View the validation status in the Authorized column. Valid cards display the status 'Syntax Correct.'
When you open a single record in the Customer – Data Entry dialog, the status appears in the Status field on the Credit Card tab.
↑ Managing credit cards
Choosing a payment processor
Setting up the account
Validating and authorizing