I agree with Colorado AML that there is just an initial designation requirement, and a specific annual approval is not a rule. That said, many financial institutions do this on an annual basis just because they can. That said, I would check your policy to make sure it doesn't require an annual approval. I doubt it, but there could also be a state law that requires this, so that might be worth checking as well.
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Adam Witmer, CRCM
All statements are my opinion, not those of my employer, and should not be taken as legal advice.
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