Milosevic, S. Gibson, P. Linington, J. Cole and S. Kulkarni, states in "On Design and Implementation of a Contract Monitoring Facility", which presents a solution to the problem to present contractual semantics in a way that enables more reliable, efficient, and flexible ECM in the extended enterprise. This involves a contract language specifically designed and developed for the contract domain and a contract engine that supports and supports common contract management tasks. The Business Contract Language (BCL) has the particular purpose of supporting event-based analysis and monitoring of associated business activities