The license provided for in this article:
(1) is valid so long as the person to whom it is issued continues in the same business, unless revoked by the department. It is presumed that a retailer is not continuing in the same business and must surrender the retail sales license if the retailer has no retail sales for twenty-four consecutive months. To allow the license to remain valid, the retailer may submit an affidavit to the department swearing that the business is continuing;
(2) must at all times be conspicuously displayed at the place for which it was issued;
(3) is not transferable or assignable.