The present work determines how to identify (critical) success factors for mobile systems and shows why they are important for deployment of these systems. In comparison to stationary systems mobile systems have a bundle of singularities calling for success factors that have to be taken into account. In order to get a clear view especially on critical success factors for a (defined) mobile system, not only the interdependencies between the single (mobile) system components and tasks but also between the success factors themselves have to be examined. The present work depicts a procedure how critical success factors can be identified and weighted. The assumptions of this work are supported by application in practice.