Hi Shreyas,
The quotation Names have to be maintained in Commodity (CPE) node. Only from there you can link the quotation source to quotation Name. Even though you may not use CPE, a quotation name is an actual representation of a commodity and hence it needs to be maintained.
Infact in FCZZ the quotation source is always assigned via quotation name. Even in FC17 , to enter prices for the commodity it will be based on your quotation Number and quotation source.
Regards,
Nikhil