Whether you have a traditional credit card terminal, an online processing system or just a telephone, finding out if a card is valid for purchase can be done in a few moments. Swipe the customer's credit card through your credit card terminal to make a charge for the purchase. If the response is anything other than "Approved," the charge has not been made and the card is not valid for the purchase.
A credit card reader, sometimes called a credit card swiper, is an electronic device used to read data stored on the magnetic stripe of a credit card.With that understanding, feel free to use the patterns presented here (and if needed, tweak them as suits you best). The North American Numbering Plan defines how North American telephone numbers are formatted. Morello is a professional writer and adjunct professor of travel and tourism.Ben Forta offers a collection of useful regular expressions, along with detailed explanations of each.The card may not have anough balance for the purchase. Call the credit card company merchant support line if you wish to check on a charge you are trying to put through without success, or if the customer feels the card has sufficient balance to cover the purchase and it is not working.You will need to provide the name and credit card number, as well as your own merchant ID to discuss the issue. Place a block or hold on the credit card to ensure that sufficient funds will remain available until the time of billing.Robert Morello has an extensive travel, marketing and business background.He graduated with a Bachelor of Arts from Columbia University in 2002 and has worked in travel as a guide, corporate senior marketing and product manager and travel consultant/expert.By now it should be clear that there rarely is an ultimate solution.More often, multiple solutions exist with varying degrees of tolerance for the unpredictable, and there is always a trade-off between performance of a pattern and its capability to handle any and all scenarios thrown at it.