Nimesh, I invite you to read an article I wrote dealing with non-U.S. investors looking to register a company in the U.S. It’s brief, and covers most of the basic...
(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.