Consignment returns is not the way you presume..
Firstly we have to understand one thing:
Consignment Fill up: Stocks will be sent to customers Location-But ownership lies with business only.(No Billing)
Consignment Issue: The stocks lying at Customer location has been consumed by his consumer(Billing will be there---Owner ship change from Business to Customer)
Consignment returns: The consumed stock (from consumer to customer) returned -in turn returned back to Business.(Billing will be there--owner ship change from customer back to Business)
Consignment Pick-up: Stocks which was kept at Customers location--will be called back(No-owner ship change,No Billing)
Now you might be knowing what you have to talk about...
Any way all these processes can be done with The Tcode of VA01--with Doc types--KB,KE,KR.KA respectively...
Phanikumar