I've had Zencart installed and working perfectly for the past two months. Today 2 customers have called to say that their credit cards could not be processed. I tested it myself and sure enough the following message is now appearing:
Nothing has been changed in the code and I can't seem to find any one else on the forum with the same problem.There has been an error processing your credit card. Please try again.
NOT APPROVED DUPLICATE
Can someone please suggest a fix?
Thanks
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