In any company ISO 9001 certified, managing non-conforming materials is a must. It is a must not only to satisfy the ISO requirements, but also to reduce costs and ensure product defects are recorded and handled appropriately. When you identify a product or material that does not match the specifications, you record it as a non-conforming material. This action will trigger an assessment, which will determine the type of defect or non-conformance, establish the root cause and decide the disposition for the non-conforming material.