Please check the below SAP help links
Still if you need any help let me know.
Ship to party to which you need to send material should be maintain in sales order as this data is coming from the sales order.
Also their is another configuration by which only available in stock material can be seen in CNS0. If required , will share that setting too.
My client is not creating Sales order.the proces is like this ..
after running the complete process in project they are creating delivery by CNS0.
then going to VA41 to create contract for mile stone billing.
VF01 for Billing.
Hence ,the ship to party which is selected in WBS as ship to party should carry all over the process once we select the delivery from project.