Sometimes there might be a requirement for transferring stock from one storage location to another storage location within a Plant. This tutorial would detail the setting required in doing the same:
Go to Transaction SPRO.
Click on IMG -> Material Management -> Purchasing -> Purchase Order -> Set up Stock Transport Order -> Set up Stock Transfer between Storage Locations -> Activate Stock Transfer between Storage Locations
Following screen appears:
Check the above check box to make the stock transfer between storage locations active.