UOP<p>Unit of Purchase: A unit of measure is assigned to all inventory items and must be defined before a product can be entered. Each product will have a stocking unit of measure, sales ordering unit of measure and a purchasing unit of measure.</p> <p>See also: <a href="https://docs.oracle.com/cd/A60725_05/html/comnls/us/inv/defuom.htm">UOP</a></p>