I am the PM for a project to do just that. We are implementing Bar-coding tying back to SAP as the Data Warehouse we are looking into using SAP Extended Warehouse for the WMS. I am going to a meeting to get SAP’s Layout and requirements (Swag Cost) this afternoon. email me and I will keep you posted. I am in Houston TX we are using a company named CMAC to implement it. You will need them or someone like them to get this in, they are really good and will provide a turn key solution for you. My rep is named Kevin Jones contact info is
Like I said they are really good and have done quite a few of these implementations already so they are very experienced in the area as well be careful on the price though and know what you want cause they are trying to make money but they are not greedy they are more interested in repeat business i think.
We are using to implement a system enterprise wide = 7 Prime 5 Blend Plants and about 15 warehouses. so we like them Also here is their website as well. Oh and tell them Al from Baker referred you maybe I will get a discount ; )