I tried a test purchase at one of my merchants and got the following:


CREDIT CARD INFORMATION

UK Customers: Do not enter credit card information


Credit Card # 3223322332233223
Valid card number needed to process order

Expiration 08/03 (MM/YY)

FRAUD WARNING: Credit card fraud is a felony and xxxx.com treats fraud attempts seriously. xxxx.com protects consumers by taking numerous steps during and after order submission to detect fraud and provide information for prosecution of fraud attempts.


==============================================
So far so good. But the same merchant, which approves credit cards within a second, reverses purchases after a month and gives the reason: invalid credit card.

How could this be?

carneol