The assessor sited this clause from the Standard:
ISO17020 para 7.4.4
All information listed in 7.4.2 shall be reported correctly, accurately, and clearly. Where the inspection report or inspection certificate contains results supplied by subcontractors, these results shall be clearly identified.
7.4.2
Any inspection report/certificate shall include all of the following:
a) identification of the issuing body;
b) unique identification and date of issue;
c) date(s) of inspection;
d) identification of the item(s) inspected;
e) signature or other indication of approval, by authorized personnel;
f) a statement of conformity where applicable;
g) the inspection results, except where detailed in accordance with 7.4.3.
And this page from the Guidance: HSG264 page 17