Vendor replication questions?

Hello All,

I have few questions related to vendor replication in SRM from R/3 backend.

What are the settings required to replicate the vendors?

Do I need to define a separate No: range in SRM as we do it in R/3?

I have come across the below settings in SRM, some clarifications needed.

--> Make Global Settings

Here in above I can give Organizational Unit in EBP for the Vendor

I understand that this is the Vendor Root Org ID, under which vendors are replicated.

My question is, Can we have only one root in SRM?

-->Define Settings for Each Backend System

What needs to be defined here?

Thanks

Arshad