Product: Nexternal
Article Link: http://help.truecommerce.com/en/articles/5208838-nexternal-notifying-customers-of-a-declined-credit-card
If your store is configured to authorize credit cards when a customer orders (Settings / Compatible Software (edit) / Payment Gateways (preferences) /Authorize Credit Cards), the customer will be notified instantly and will have the opportunity to re-enter their information so that an order can be placed. You can also set a Declined Explanation in Settings / Compatible Software (edit) / Payment Gateways (preferences) / Declined Explanation.
If your store is not authorizing credit cards in real time and a customer's card is declined, your business should contact that customer in the manner that you feel is best.
For more information on credit card authorization choices and how they work, please refer to this article.
rev: 5/18/21