5. Bill vs Purchase Order
From TrueERP wiki
Overview
Bill v Purchase Order
Bill v Purchase Order - Do you understand the difference between a Bill and a Purchase Order with reference to accounts being entered on Bills, while products are entered through a Purchase Order?
A Bill is for posting expenses like telephone, power etc. Typically for your overhead accounts. Where as a Purchase Order is for ordering in products and services. Purchase Order is for running inventory or even non inventory but tracking your COGS(Cost of Good Sold).