There is a field "Unit Cost (LCY)" in a Sales Line. Currently if an Item is being entered on a line this field is being populated from Item Card or from Stock keeping Unit. However the Purchase Price List might already exist for an Item and the Unit Cost on an Item Card might be irrelevant. Therefore it would be really great to be able to define the Vendor No. or at least the default one on a Sales Line in order that the Price is being drawn from the Purchase Price List.