While other payment processors may not need 100% accuracy, Square requires all card information to be correct in order for a manually keyed-in payment to be successful. This is a security measure to protect businesses as well as cardholders from potentially fraudulent transactions.
You will need the correct card information please have your customer confirm the card’s billing ZIP code and CVV with their bank if they do not know it or have it available.
P.S. Welcome to the Seller Community @NKB
JJ
Community Moderator, Square
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