My understanding is that, even though you are using the BOI interface and not the StarShip Link, the first time you do the mapping, you need to access the "Customize Interface" screen from Sage 100. It's the exact same screen you access from StarShip but it needs to be accessed from Sales Order, Shipping Setup Options.
------------------------------
Doug Higgs
Midwest Commerce Solutions, Inc
(312) 315-0960
Chauffeur, Chef, and Personal Assistant to Sprinkles
------------------------------