Don't know about that specifically. Being a fiduciary as an RIA is kind of a way of thinking and behaving... always disclose everything, customer's interests first, no shady deals, honesty at all times, etc.
Have you had an audit of your RIA? Years ago some RIAs could go an entire career without an audit. I had 4 RIA audits and 2 CFTC audits. Why so many? I think it was because there is a regional SEC office in Denver and they sent out their rookie agents to get some practice on me.
The only gig I ever got was that I didn't have some customer information on their "account card"... like address and phone number (it was elsewhere too, but was supposed to be on that card for "quick reference" by auditors, you know). They sent a follow-up inspection for that one thing to make sure I'd updated those cards as I was supposed to. Imagine that?