customer consignment fill-up with goods send directly from vendor

Hi

During standard SAP customer consignment fill-up, the following are the standard process flow in ECC.

1 – Create a sales order (VA01) with order type KB.

2 – Create Delivery Order ..

3 – Post goods issue.

Question:

1. I am wondering if there is an ability to trigger a purchasing requisition automatically upon which a customer consignment fill-up creation so that the PR can be converted into PO and send it over to a Vendor,  and,
2. The consignment goods are shipped directly into the customer consignment location (this avoids additional freight costs by moving the inventory twice) from the vendor.
   
   Something like the following:
   
   1 – Create a customer consignment
   
   2 – PR created automatically upon which the sales order entry is saved.
   
   3 – PO converts from PR, and send to vendor.
   
   4 – Vender delivers the goods directly to customer location.
   
   5 – A virtual GRN created in SAP by the vendor. At this stage stock is still under the ownership of the vendor.

How to setup above process in SAP that behave like drop ship in fill-up scenario.?

Regards,

Tuff