Branch transfer SAP site to legacy site

Hi All,

I want to test the process of transfer of stocks between two distribution centers(sites).I am presenting doing the integration test. My company has the process of transferring stocks from one DC to another. Book adjustment will happen to account for the same. To transfer stocks from a non SAP DC to a SAP DC it was decided to keep the sending site (non SAP) as a vendor and do a GR at the receiving site.

To test this entire cycle what are things that i have to do

Thanks in advance

Regards

Prabhu.