Section 199(2) in The Calcutta Municipal Corporation Act, 1980
(2)The Municipal Commissioner shall, after making such enquiry as may be necessary and within thirty days of the receipt of the application, grant him such certificate if the application is in order, or shall reject the application if it is not in order :[Provided that no profession, trade or calling, referred to in sub-section (1), shall be commenced or carried on without any licence or permission, as required under this Act, being taken out and produced before the Municipal Commissioner, failing which the certificate of enlistment shall not be renewed.] [Proviso inserted by W.B. Act 6 of 1996.]