Customized Sales Order Cycle

For One my client which i did a project , the Sales order cycle was customized.
The Customer would first come to client, Client will Raise a SO against the customer.
A purchase order Will be raised against already approved Blanket Purchase order for the qtr.
The PO will be fulfilled by Contract Manufacturer.CM  Will ship the  product to third party Logistics .
3PL will be then responsible to ship the product to Customer premises.
Invoicing will be done by client and client will pay in turn pay to CM 
Following the business flow depicted in Diagram: