Can I use a checking account as a merchant account for my corporation?
Merchant accounts are different from regular checking accounts, and if you want to open one for your company you should contact a merchant service provider.
Typically you would need to submit an application and go through a credit check. Then in order to process payments you would need a terminal. It can be physical terminal where you would swipe cards, or online terminal such as this used by websites to process payments.
(a) You made a typo in the card number, CCV code, expiration date, name or address;
(b) Your card balance is too low;
(c) Issuing bank has declined this transaction for some other reason related to your account.