The key guidances, which relate to training and supervision of assessors (D03-04) as well as the guidance and principles to be followed by the assessors in performing their work (D05-02 with annexes for specific accreditation areas) are as follows:

• D03-04 – Assessors
• D05-02 – Assessment
• D05-02d1 – Annex 1: Assessment of testing laboratories
• D05-02d2 – Annex 2: Assessment of calibration laboratories
• D05-02d3 – Annex 3: Assessment of inspection bodies
• D05-02d4 – Annex 4: Assessment of certification bodies
• D05-02d5 – Annex 5: Assessment of environmental verifiers
• D05-02d6 – Annex 6: Assessment of GHG emissions reports verifiers