The regulation does not require that you obtain/verify ID information on signatories. However, there may be a reason that you will want to do so. Ken Golliher points out that "documentary" verification for entities is subject to relatively easy fraud, and suggests that checking out the principals might be a good idea.
Think about what your commercial lenders do for small businesses. They normally require personal guarantees of the principals on the smaller borrowers. They also take time to know who the principals are, since it's really the integrity of the business's principals that the bank needs to count on (in addition to cash flow and the rest of the basics).
So you might want to include collection and verification of signatory ID info in your CIP. And you'll describe the limited circumstance when this will be done. But you can count on examiners to "ding" you if you say you'll do it and you fail to.
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John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8