Maryland Code, Tax-General § 9-330

(1) files false information under this subtitle;

(2) fails to file a report required under this subtitle;

(3) fails to give the Comptroller the notice of a change in use required under § 9-327(b) of this subtitle;

(4) fails to pay any motor fuel tax, interest, or penalty due under this subtitle;

(5) violates any requirement for the class of license held;

(6) violates any regulation adopted under this subtitle;

(7) fails to maintain the bond required under Title 13 of this article;

(8) stops engaging for more than 6 consecutive months in the business for which licensed; or

(9) fails to keep records required under this article, Title 10, Subtitle 3 of the Business Regulation Article, or an applicable regulation.