Maintaining certification in these standards is a mandatory requirement for direct material suppliers. As evidence of compliance with this point, the supplier must deliver to the Purchasing and Quality area a copy of the current certificate of the company, issued by acertification body accredited by the IAF MLA (International Accreditation Forum Multilateral Precognition or IATF respectively (third part), and where the main scope of the certification body includes the certification of management systems with the ISO /IEC 17021 standard.