Your company needs a business address, and (optionally) another address to serve as mailing address.
Business address must be physical while mailing address can be any address (including P.O.Box).
(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.