The SAFE Act requires a mortgage loan originator (MLO) to:

The SAFE Act requires all state-licensed mortgage loan originators (MLOs) to obtain and maintain an active license through their state’s regulatory agency, including meeting annual renewal and continuing education requirements.

“Each mortgage loan originator must obtain a license from, and annually renew a license with, the State in which the mortgage loan originator maintains a unique identifier.”

— SAFE Act, 12 U.S.C. § 5104(a)(1)-(2)

AARMR and CSBS administer the NMLS system, but licenses are maintained through state agencies. While re-taking the national test is required after some periods of inactivity, it is not required specifically after failing to maintain a license for four years unless mandated by the state.