REP (Requirements Engineering Process) is one of the most essential processes within the software project
life cycle because it allows describing software product requirements. This specification should be as
consistent as possible to enable estimating in a suitable manner the effort required to obtain the final product.
REP is complex in itself, but this complexity is greatly increased in big, distributed and heterogeneous
projects with multiple analyst teams and high integration among functional modules. This paper presents an
approach for the systematic conciliation of functional requirements in big projects dealing with a model based approach. It also explains how this approach may be implemented in the context of NDT (Navigational
Development Techniques) methodology and finally, it describes a preliminary evaluation of our proposal in
CALIPSOneo project by analyzing the improvements obtained with our approach.Ministerio de Economía y Competitividad TIN2016-76956-C3-2-R (POLOLAS)Ministerio de Economía y Competitividad TIN2013-46928-C3-3-RMinisterio de Economía y Competitividad TIN2015-71938-RED
