scale supersymmetry breaking which are known to be deeply connected to each other. In our analysis we assume the existence of a hidden sector with appropriate VEV of the moduli fields which couples gravitationally with the observable sector.Considering a dual scenario namely flux compactification and gaugino condensation at two different scales, we achieve to bring out the necessary constraints on the Kahler potential and superpotential so that the desired phenomenological values of the observable sector parameters can be obtained with no flat direction in the resulting scalar sector.We have shown that at least two hidden sector fields are necessary to achieve this.

We conclude by presenting a simple model in support of the analysis carried out in this work to illustrate that all the generic constraints on the Kähler and superpotential may be mutually compatible. Various parameters of the observable sector are estimated for this model. Our constraints thus put a set of restrictions on the class of supergravity models which they have to satisfy to yield phenomenologically viable results so that the following features can be achieved concomitantly :

-   Soft supersymmetry breaking parameters are generated in the observable sector at the TeV scale.

-   All the flat directions 