The Regulation establishes a single classification system: the Common Procurement Vocabulary (CPV). This classification endeavors to cover all requirements for supplies, works and services. By standardizing the references used by contracting authorities to describe the subject matter of their contracts, the CPV improves the transparency of public procurement covered by European Community directives.
- a main vocabulary containing a series of numerical codes comprising eight digits each and subdivided into divisions, groups, classes and categories. A ninth digit serves to verify the previous digits;
- a supplementary vocabulary expanding the description of the subject of a contract by adding further details regarding the nature or destination of the goods to be purchased.