During the last years the field of electronic commerce has seen a rapid growth. Various methods have been developed to allow the electronic transfer of business-related information. Those methods support either human to human, human to machine, machine to human or machine to machine interaction. Unfortunately, the methods used in those four categories are completely different and there does not exist a interconnection between them. Therefore, we describe how to manage the different interfaces used in electronic commerce for both the sending and receiving end of the business transaction.