The International Standard Industrial Classification (ISIC) is the United Nations (UN) Industry Classification System of All Economic Activities. Its main purpose is to provide a set of activity categories that can be utilized for the collection and reporting of statistics according to such activities. It is used by the Department of Inland Revenue (DIR) as a means of classifying business activities. Buyers use ISIC codes to classify their contracts by applying a code and description for the items they wish to procure. Suppliers can add ISIC codes to their Supplier Profile to assist in the matching of contract opportunities.