The aim of this paper is to identify areas for improving the level of supply chain management (SCM) execution. A conceptual model was developed that proposes internal and joint SCM conditions and the  adoption of SCM processes as the main antecedents of SCM execution. Based on a survey of 174 senior  managers representing large organizations structural equation modeling was conducted followed by a three-step importance-performance analysis. The results show that internal SCM conditions, specifically information technology and human resources, are the major drivers for improving the total level of SCM execution.