The orderer must then be prepared to respond to a request (callback, in this case) to process the finalinvoice.
订货方然后必须响应一个请求（在本例中是回叫）来处理最终的货物。
2
Clients should find no surprises when receiving a finalinvoice, but if the consultant neglects to include shipping costs in preliminary conversations, such fees will prove problematic.