The Sage ERP Accpac (Sage 300 ERP) inventory system provides your inventory managers and users with live, real-time itme quantities. But equally important, it provides your accounting department with accurate inventory balances and proper GAAP based costs. It's important however, to understand the behavior of inventory costs in a batch-based accounting system such as Sage ERP Accpac. So in this tutorial, we demonstrate the real-time behavior of quantities in the inventory system and importantly, how the Day End Process affects valuations in inventory and the general ledger.