If you are referring to the
ISO pamphlet on how to publicize the certification, I would not recognize that as a valid source for requirements. Since nonconformities can only be written against valid requirements, what ISO suggests, recommends, advises, etc... does not come into play. As I said before, there are requirements for the usage of certification marks, which, as already mentioned is covered in ISO 17021 and in the contractual arrangements between registrants and registrars. Outside that, auditors likes and dislikes are only that.