From EPC Standard
One striking commonality between EPC meta models is the Process. One process may contain an unlimited number of elements, but a process element is always linked to a specific process. If a process contains an interface, it is always linked to one specific process and represents a refinement of a “normal” function.
- Jannaber, S., Karhof, A., Riehle, D. M., Thomas, O., Delfmann, P., & Becker, J. (2016). Invigorating Event-driven Process Chains-Towards an integrated meta model for EPC standardization. In Modellierung (Workshops) (pp. 13-22).