Designing Decentralized Business Proces...

Formulating temporal requirements and constraints in the Service Level Agreements of inter-organizational business processes raises the challenge to balance a trade-off between low coupling and expressiveness, between keeping the internals of a participating process secret and being able to express cross-organizational temporal constraints. We introduce temporal parameters as means to greatly enhance expressiveness while maintaining lean interfaces. In addition, we propose distributed procedures for checking controllability and negotiating parameter restrictions of temporally constrained inter-organizational business processes at design time, which fully respect the privacy of the local process implementations.