Retail licenses issued hereunder shall apply only to the premises described in the application and in the license issued thereon, and only one location shall be so described in each license. After such retail license has been granted for particular premises in any city, the director, upon proper showing, may endorse upon the license permission to abandon the premises, but in order to obtain such permission the retail licensee shall file with the director a request in writing, and a statement under oath which shall show that the premises to which removal is to be made comply in all respects with the requirements of this act. No such removal shall be made by any licensee until his said license has been endorsed to that effect in writing by the director.