Software editors concerned to produce faster, better and cheaper, are irreversibly affected by the development of product lines (software factory). The software product line approach offers techniques to increase reuse by explicitly modelling the common and variable characteristics. Considering this approach, the variability is modelled and managed throughout all stages of development. Thus, models of variable business processes are part of the design artefacts in analysis stage. Several models have been proposed to represent variable business processes. However, these models are far from being directly usable in real industrialization of production in software factory. Indeed, deficiencies such as non-representation of variability on all entities of business processes, not taking into account all the possible types of variability, or use proprietary languages, prevent those models to be operational. In this paper, we present these barriers to the operationalization and propose soluti ons to overcome each of them. The result is an operational model of variable business process, actually used and integrated in a software factory approach.