Hi,
As suggested above then, change the setting "Credit Card Number" in "Minimum Values" in the Zen Cart Configuration menu.
I'll probably change the main code to use this value as well then.. the JavaScript checking code already does, so your setting must be below 16.
There may be places where 12 digits is fine so I won't be enforcing any arbitrary limits, just keeping the LUHN check as it is, that'll do for validation.
Hope that helps!
All the best..
Conor
ceon
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