The use of process models in business information systems for analysis, execution, and improvement of processes assumes that the models describe reality. Conformance checking is a technique to validate how good a given process model describes recorded executions of the actual process. Recently, artifacts have been proposed as a paradigm to capture dynamic, and inter-organizational processes in a more natural way. In artifact-centric processes, several restrictions and assumptions of classical processes are dropped. This renders checking their conformance a more general problem. In this paper, we study the conformance problem of such processes. We show how to partition the problem into behavioral conformance of single artifacts and interacti...