Dilema over Plant / Organization Structure

Hi,

We are a Service Provider Company based in Orissa.

We receive Contracts from other Companies & execute them across India (different Project Sites). We have different Project Site across India.

In SAP, do we need to create all the Project Locations as PLANT.

Or, we can simply create a SINGLE PLANT & treat all the Project Sites Storage Locations.

As of now I have treated all the Site Locations as Plant.

For example, in Jharkhand, we have got two offices, one in Ranchi & another in Dhanbad. The Ranchi Site is taking care of three different projects running near by & Dhanbad Site is taking care of two different rojects. We have created both Ranchi & Dhanbad as Plants.

But while discussing the Organization Structure with our seniors, some one suggested that there is no need to create Project Sites a Plant; the same can be managed using Storage Locations only. They have proposed to create Jharkhand as a Plant; Ranchi & Dhanbad as Storage Locations. The problem with me is that there are different people handling purchase & stock both in Ranchi & Dhanbad.

Also there is some Stock Transfer from Ranchi to some other States (for example, Guwahati & Silchar in Assam).

If we create Jharkhand & Assam as Plants and Ranchi ,Dhanbad, Guwahati & Silchar as Storage Locations, will be logically true.

I am in a dilema as I am not aware of how the Project Systems people map the Plants in SAP. Here in our case, the Project Systems guy is thinking of STATE as Plants while I personally think that Office Locations from where purchase & stock keeing is done as Plants.

I am confused about the process for transfering Materials among the locations (withinn and outside State)

Pls. guide.

Regards

Aditi..