Mendling, JanNüttgens, MarkusGodlevsky, MikhailLiddle, Stephen W.Mayr, Heinrich C.2019-11-142019-11-1420033-88579-359-8https://dl.gi.de/handle/20.500.12116/29864Event Driven Process Chains (EPC) are commonly used for the modelling of business processes. As modelling is decentralised to personnel not familiar with the formal aspects of this method, syntax checks are needed to avoid invalid models. This paper presents the concept of implicit element and arc types. It can be used both to support modellers in the process of building models and to check entire models. It is especially helpful to avoid closure calculation for connector type consistency constraints.enText/Conference Paper1617-5468