Abstract: In this paper we present our ideas to apply constraint satisfaction on business processes. We propose a multi-level constraint satisfaction approach to handle t levels of abstraction in business process modelling. 1 Motivation A main problem in the area of business process modelling is the management of the dependencies between processes. A lack of attention can easily result in inconsistent process models. Inconsistencies should be discovered in an early stage of modelling to reduce the amount of time and costs. The ordering of business processes depends in most cases on complex relations between the processes. Commonly there are no single business processes with no relations to other processes. Usually processes depend on each other and their input/output data respectively. While this scenario describes a sequential dependency there are hierarchical dependencies as well: One or more processes can be the sub-item(s) of a higher-ordered process. In this paper we propose an ap...