“Invalid card” on swipe

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Originally Posted by Ckirk

I need some help... I purchased two credit dumps, verified with LuxChecker, wrote the data to cards. Went to swipe at the gas pump, got a “invalid card” message after selecting credit.
Anyone have a clue what this means ?
Thank you

what code did you get ? i recommand not to check stuff before you go to swipe it !
now it all depneds where ou also was buy the stuff !