In Adagio Inventory, there is a Serial Number report that lists serial numbers from Order Entry and IC shipments, and can be found under the Transactions menu and the Shipments sub-menu. This report is updated after Day End in OE.

If you don't use Inventory, the Serial Numbers report can be found in OrderEntry under the Reports menu and the Price List Reports sub-menu.

You could also do a GridView inquiry on the OE Open or Historical Invoice files to search for particular serial number values.

What type of Serial Number lookup are you trying in Accpac OE that is not possible with Adagio OrderEntry?