Journal of Theoretical and Applied Information Technology
ERP systems play an important supportive role in most sectors of the economy. This paper was developed to answer the question related to the impact of ERP systems on user performance in Tunisian companies. This paper proposes a model combining the Task Technology Fit (TTF), the Technology Acceptance Model (TAM) and Delone & McLean model to evaluate the user performance of ERP system. The model was tested using survey data collected from 269 users of the ERP system.