Hi Yogesh
You have 0 of item X in stock, you have 10 of Z in stock. In the scenario above an order for 10 of item X should still result in a suggested order of 10 for Z, it would not for this and would not for items Z1 and Z2, which needs to the 10 Z to cascade, unless the stock of Z is in a warehouse not included in the chain of demand. When you set minimum coverage on Z if you have 10 in stock it will not suggest a new order, which means you are not ordering Z1 or Z2 which is, I believe, what Arslan wants from his description.