The Item Master is an official business term that refers to a database of all the items a company carries in its inventory. It is an important tool for businesses, as it provides a comprehensive overview of all the items a company has in stock, including their item numbers, descriptions, prices, and other pertinent information. The Item Master is used to track and manage inventory, as well as to ensure that the right items are ordered and delivered in a timely manner. It is also used to provide accurate pricing information and to help businesses stay organized and efficient. By having an up-to-date Item Master, businesses can make sure they have the right items in stock and can quickly and easily access the information they need to make informed decisions.