Tenn. Code Ann. § 62-32-104: Prohibited activities

No person shall:

(1) Act as a fire protection sprinkler system contractor without a valid certificate of registration issued by the department; provided, that a partnership or joint venture may act as a fire protection sprinkler system contractor without a certificate of registration if and only if each partner or joint venturer is duly registered;

(2) Act as a fire protection sprinkler system contractor under a certificate of registration without having on staff a responsible managing employee who holds a valid license issued by the department. A person holding a valid certificate of registration may continue work in progress for ninety (90) days after the death or disassociation of its licensed responsible managing employee or for a longer period that may be approved pursuant to rules adopted under this part;

(3) Act as a responsible managing employee for a fire protection sprinkler system contractor without a valid license issued by the department; or

(4) Sell, install or service a fire protection sprinkler system in violation of this part or the rules adopted under this part.