Availability check for components

Hi All,

We have one material which is assembled by using two components (BOM).

During avaiability check in sales order system should check components stock available in Stores.

· If there is sufficient stock of the component materials is available, the availability check should report a fixed number of days to make assembly,

· If there is insufficient stock of the component materials, the availability check should report the longest lead time for the material which is short + fixed number of days to assembly.

Please help

Vikas