- in the case of an auditor, an internship or formal auditing experience is required. When actual honest evidence is presented to C&A that he has demonstrated that he can produce flubless results his certificate is validated with a gold seal and is a permanent certificate. With other courses the person must demonstrate that he can apply the materials studied by producing an actual, honest statistic in the materials studied. He presents this evidence to C&A and receives a validation gold seal on his certificate. (HCO PL 31 Aug 74 II)