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AMEX cards (15 digits) not being validated

    Apr 03 2009 08:41:46

    #1

    Don

    Join date : 2008-09-18      Posts : 487

    Hi,

    Premium user, cart 'set up' shows cards accepted as Visa, Maestro, Mastercard.

    However a purchaser has selected Visa as their payment method and then only keyed in 15 number digits, which when punched into my Terminal processor, processed and printed, turns out to be an AMEX card. The only time I was aware it was AMEX was when it was printed.

    I terminated AMEX cards years ago, because of their extortionate charges.

    I am therefore waiting to see if the payment shows up in my Bank account before shipping the goods.

    Why did my shopping cart only accept 15 digits? Why did it not validate the entry?

    Has anyone else experienced this?

    DB.

    www.donbarrow.co.uk
    www.pacenotes.com
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    Apr 03 2009 14:22:47

    #2

    Debbie Q

    Join date : 2008-09-18      Posts : 4994

    In cart setup under required fields are you sure you have "Validate" checked?

    Debbie Q

    Mal's Support: www.mals-e.com/support.php
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    Apr 04 2009 10:11:24

    #3

    Don

    Join date : 2008-09-18      Posts : 487

    Debbie,

    Yes my 'Validate' field was already checked.

    However Mal has also answered below.

    [Amex cards are usually pretty easy to spot because they start with the number 3.

    It is a bit of myth that all cards are sixteen digits long, they aren't. The cart's validation is a standard MOD 10 check which will pick out typos in a card number but not much more than that.

    However the problem here is not that the card number wasn't valid, it is that you don't
    accept that card type. No, validation is going to help with that one.]

    Thanks to all.

    DB.

    www.donbarrow.co.uk
    www.pacenotes.com
    Please either Share or Like my Facebook




    Apr 04 2009 14:04:01

    #4

    Debbie Q

    Join date : 2008-09-18      Posts : 4994

    Seems to me that since each different type of card starts with a different number validating that the card the customer used was not really a VISA should of been extremely easy.

    Debbie Q

    Mal's Support: www.mals-e.com/support.php
    GT's Forms and examples: www.malsforms.com
    Helpful java scripts: www.gemasana.com/mals
    Shipping help documents: www.stoner.org.uk/mals

    My Create-A-Book Publishing - mycreateabook.com
    Personalized Books, Music CDs and Gifts for all ages and occasions.

    Please help me out and share my site on your networks.