The current rules amended in 1999 by the Financial Crimes Enforcement Network revised the regulatory definitions of certain non-bank financial institutions for purposes of the Bank Secrecy Act (BSA) and grouped the definitions into a separate category of financial institution called money services businesses (or MSBs). A business that meets one or more of the definitions of a type of MSB (as currently defined) is an MSB and must comply with BSA requirements applicable to it as an MSB, as a financial institution and as a specific type of MSB.