Certain businesses are ineligible for treatment as an exempt non-listed business (31 CFR 103.22(d)(5)(viii)). An ineligible business is defined as a business engaged primarily in one or more of the following specified activities:
•Serving as a financial institution or as agents for a financial institution of any type.
•Purchasing or selling motor vehicles of any kind, vessels, aircraft, farm equipment, or mobile homes.
•Practicing law, accounting, or medicine. http://www.ffiec.gov/bsa_aml_infobase/pages_manual/olm_019.htm