The "primary" and "secondary" concepts regarding identification are not expressed in the regulation or the supplementary information that accompanied it. They fall under the heading of "best practices."
However, the ideas that your CIP must include a list of what you regard as acceptable identification and that it must be approved by and revised by the Board reflect the gospel.
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In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.