INVALID FORMAT on POS after SWIPE

[Мамкин Кардер Элитный]

hey i get INVALID FORMAT on swipe ONLY at a specific store which is my most important store
but the same dumps WORK without any issues anywhere else.
its for swiping GC but the dumps are CREDIT and i think the pos is trying to run it as DEBIT because they only want you to pay via debit....could that be the issue?
has anyone ever seen "DECLINED - INVALID FORMAT" ?

[Blackwood]

Like you said it might be because they pos is set up for debit cards with pin, also there could be other factors in play like region blocks...

[Мамкин Кардер Элитный]

def not region blocks all from same city and state