The document discusses two generic structures for business process modeling: one that adopts a variety of process concerns and layers of concepts, and one that minimizes barriers between process presentation and model analysis through verification and validation. It then examines several frameworks for business process reengineering (BPR) and modeling, including PADM, PRLC, and frameworks from Davenport, Mayer, and Knettinger. Based on these, it concludes that a generic business process model should represent that a business process has customers, is composed of value-creating activities operated by human or machine actors across organizational units.