Retail Process

Dear All,

Am going to create a new company code process for IS-RETAIL.

The terminology in IS-RETAIL are so different. and difficult.

Can any one plz tell some process about that.

I want to create 12 sites. is that site and Plant are same ? In MM , while creating Plant , we copy from existing and change according to that.

is ther anythg like this here??

plz explain.........

thx in advance................