Rescheduling 
Use
Up to Release 4.6C, only sales documents were considered for rescheduling processing.
From Release 4.6C, the system also considers stock transfer documents for purchasing (stock transport requisition, stock transfer orders and stock transport scheduling agreements) and checks them for availability. Call up rescheduling using the menu path: Logistics -> Sales and Distribution -> Sales -> Environment -> Backorders -> Rescheduling -> Execute (Transaction V_V2).
It is possible to process sales documents and stock transfer documents either together or separately. By doing so, you can assign sorting criteria for the rescheduling run on the selection screen.
You can access the analysis of the last rescheduling run using Sales menu -> Environment -> Backorders -> Rescheduling -> Evaluate (transaction V_R2). The analysis also considers the processed stock transfer documents. You can now also use parameters for purchasing on the selection screen, in order to restrict the evaluation.
You can find an exact description of the rescheduling functionality in the documentation on the report SDV03V02.