Supervising remote task execution

A key problem of collaborative workflows is the assumption that remote tasks will be executed as agreed on before. In order to enforce compliance to given requirements, evidence of the correct execution of a remote task has to be produced. However, participants of inter-organizational workflows are autonomous and information about their private business processes is often (intentionally) unavailable to service consumers. Especially in an open environment, the enforcement of contracts and the proof of compliance to predefined requirements is a challenge.
This project attempts to elaborate an approach to enforce the correct execution of tasks which are executed remotely using supervising mechanisms. In order to cope heterogeneity, web services and service oriented architectures are the basis for further development.