Hello Manju,
Yes in fact I have been looking in to the documents that you can download from the marketplace, plus some other documents that I have found in other related forums, Now I actually came across with a good answer that you gave in other forum that clarifies some doubts about the Sales Manager 2.5 implementation.
Integration SMP 3.0 and Inventory Manager 3.2 / 4.0
thanks and Regards!