Dear Satya
high level: using plant code (in sales order) and the "partner data" SVT will detect if "relevant" sales order (or delivery) exists. Then you should find it in th SVT tables.
PLease give hints a.s
a.) in sales order you have used on material having a SVT composition
b.) the sales order fulfill the "selection criteria" as set up by you
c.) the plant does have assigend country, same for partner data => using this the "relevance" is detected
C.B.