The importance of enterprise resource planning (ERP) systems has been increasingly recognized by organizations of all kinds. Nevertheless the implementation of such systems has been proved to be difficult, demanding many resources with long duration. The following comprehensive research is based the examination of ten known information systems models: (1) technology acceptance model (TAM), (2) task technology fit model (TTF) , (3) a model combining the technology acceptance model and the task technology fit model, (4) Delone and Mclean IS success model, (5) computer self efficacy model (CSE), (6) Diffusion of Innovation model (DOI), (7) a model combining the technology acceptance model, task technology fit model and computer self efficacy model, (8) unified theory of acceptance and use of technology (UTAUT), (9) conceptual ERP model, (10) TIMES model.

This research aims to: (1) review the literature on information systems acceptance models generated by two different perspectives: individual (e.g. Technology acceptance model) and non individual (e.g. Task Technology Fit) characteristics, (2) empirically compare ten models and their extensions in the field of ERP systems, (3) examine the relationships among fundamental constructors (independent and dependant variables) and seek for patterns in order to understand the relationship between them, (4) examine the affect of moderators on these relationships such as: age, gender, education, experience, technological or business orientation, level of management and voluntariness of use, (5) develop, formulate and empirically examine a model that integrates elements across the ten models and best describes the acceptance of enterprise resource planning systems.

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