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by adnrw 4462 days ago
Funnily enough, the form in the original post validated my credit card number as Amex and then validated a 3-digit CVV number as OK.
1 comments
davekt 4462 days ago
Some amex cards have a 3 digit cvv [1].

[1] http://ecommerce.shopify.com/c/shopify-discussion/t/heads-up...

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