The payment of a business tax required by the provisions of this title, and its acceptance by the City and the issuance of a registration certificate to any person shall not entitle the holder thereof to carry on any business unless he has complied with all the requirements of this Code and all other applicable laws, nor to carry on any business in any building or on any premises designated in such registration certificate in the event such building or premises are situated in a zone, or locality in which the conduct of such business is in violation of any law. (Ord. 2062 § 2 (part), 1975).