Transaction fails, on resubmit user gets "Duplicate transaction" error message
I am using eCart6, Authorize.net
I had several complaints of this, tried to recreate the issue by entering false CC, Exp date, CVV, etc, no luck. I found that there was an issue with my clients CC clearing company, and that any transaction using an AMEX was returning "General Error" at Authorize.net.
I have since removed AMEX from the credit card dropdown, but wanted to know why clients would receive a duplicate transaction error message when the transaction failed, and was not recorded to my database either?