Section 169(1)(a) in Odisha Goods and Services Tax Act, 2017
(a)by giving or tendering it directly or by a messenger including a courier to the addressee or the taxable person or to his manager or authorised representative or an advocate or a tax practitioner holding authority to appear in the proceedings on behalf of the taxable person or to a person regularly employed by him in connection with the business, or to any adult member of family residing with the taxable person; or