In this paper we develop an Enterprise Systems Implementation Methodology-in-Action framework.The framework is grounded in current views on methodology-in-action (theoretical grounding) andenhanced by an empirical study (empirical grounding). The notion of Implementation Methodology-in-Action, as articulated in this paper, integrates two complementary views that conceptualize amethodology in terms of a technology focusing formalized aspects, i.e. contents as prescribes bydesigners, and a structural view focusing situational aspects including implementers, implementationcontext, enterprise systems software, and other individuals participating in the implementationproject.

The purpose of the framework is to integrate existing gaps in methodology views in order tocontribute to a better understanding of implementation methodology. The integrated methodology concept is understood in terms of formalized and situational elements. These elements exert asignificant influence on the characteristics and effectiveness of methodology use, and implementers’actions which may explain differences in ES implementation process’s outcomes. The results from thisresearch helps also participants in ES projects to become aware of the elements which may influencethe actions of the users working with implementation methodologies as well as the reasons for these actions in the ES implementation.