Being the de-facto standard (object-oriented-OO) method(-logy) for software-intensive systems development, UML with its different diagrams and supporting tools represent nowadays the mostly adopted software-engineering means for information systems (IS). Nevertheless, due to this wide-acceptance by all organization stakeholders several enhancements at the modelling level are required before adventuring into further implementation phases. The coherence and complementarity between different diagrams have to tackled; On the basic of such endeavored coherent global view, the consistency and validation of the whole IS conceptual models are to undertaken; and last but not least as current information systems are mostly networked and concurrent, UML-driven have to cater for intrinsic distribution and concurrency. To leverage UML-driven IS conceptual modelling towards these crucial enhancements, we propose a semi-automatic intermediate abstract phase before any implementation, we govern by a r...