求助一下，美国客户说不能TT付款只能信用卡付款，我问了我们银行说不能信用卡付款，我和客户说明了这个情况，客户说要我填一个W9条款是什么意思？

Unfortunately, we do not support payment by wire. If corporate credit card isn’t an option, we can pay by check. In order to do that, we would need a W9 and an invoice to do this though. Since you generously agreed to bill us in two separate installments (before and after), we would need two invoices (in addition to a W9 so we can set you up as a vendor).

Can you please provide these items?