This part of ISO 17296 covers the principal requirements applied to testing of parts manufactured by additive manufacturing processes. This part of ISO 17296 — specifies main quality characteristics of parts, — specifies appropriate test procedures, and — recommends the scope and content of test and supply agreements. This part of ISO 17296 is aimed at machine manufacturers, feedstock suppliers, machine users, part providers, and customers to facilitate the communication on main quality characteristics. It applies wherever additive manufacturing processes are used.