This paper analyses the conditions of Enterprise Resource Planning (ERP) system implementations on the basis of research conducted among practitioners dealing with ERP projects. The study discusses how the researched projects were linked with enterprise strategy, how their efficiency was measured and in what extent they defined implementation goals. The investigated projects were divided into groups on the basis of their duration, scope, company size and success level achieved. The results demonstrate the real need for improvement as regards investigated conditions of ERP projects. The practitioners should be more focused on the business benefits during implementation project, elaborate the mechanisms in order to measure the implementation effectiveness and pay more attention to the definition of measurable implementation goals. The research outcome also reveals that practitioners from most complicated projects are most aware of the overwhelming implementation challenge, while, on the other hand, the relatively simpler projects seem to be underestimated.