First let's assume you're a start up getting your first online purchase order system. You're thinking this customer and/or contract that will put my business on the map. It has finally happened, I'm getting my first big break, all that hard work is paying off. The thought of increased sales, money improve operations and profits to expand. Then reality sets in. How am I going to pay my vendor(s) for the supplies needed to fill the order? You realize some vendors will require half down, or may not extend the necessary credit.