Modelling business processes intern in a company might be totally different as speaking about processes between different companies. The reason for that that companies are built up based on different departments and the major challenge of a corporate business process is to describe the information flow of the department. If we speak about cross company processes however they have a little bit different characteristics. Companies working with each other mostly based on markets, either based on general free markets or some kind of a limited market. Another important difference is that information can not free flow freely, it has very strict private characteristics. As a result, if we want to define cross-company business processes we should much more concentrate and model the markets that are connecting the different enterprises.