One of the problems with conventional conceptual modelling methods is that they do not take into account certain important semantic interdependency types between the static and dynamic aspects. Integrity of dimensions is crucial for successful reasoning and solving problems that occur in conceptual modelling. Typically, conceptual modelling methods project various aspects of information systems using different graphical representations. Therefore, to reach semantic integration of various architectural aspects is very difficult. This paper presents semantically integrated conceptual modelling method. This method enables stability and flexibility of the diagrams that are very important for managing constant changes of organizational and technical requirements. It shows how alternative actions introduced into different scenarios. This is also important for controlling semantic integrity and for maintaining holistic representations of different aspects. Holistic modelling approach enables reasoning about system architecture across organizational and technical system boundaries. On a simple hotel reservation system scenario, it is demonstrated how different actions can be decomposed into more primitive underlying interaction loops. Integrated conceptual modelling method is important for evaluation of expressive power of conceptual modelling languages. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.