Inhaltsangabe: Abstract: Conventional workflow management focuses on improving the efficiency of business processes within one organization. However, processes should not only be supported within the enterprise, but also when crossing organizational boundaries, e.g. in order to support new forms of collaborations as virtual enterprises. Due to the different nature of interorganizational workflows, conventional workflow technology cannot be directly applied. The most important requirement specific to interorganizational workflow systems is obviously that they are able to deal with...