Tennessee Code Title 35. Fiduciaries and Trust Estates § 35-5-116

(a) Any trustee named in a suit or proceeding, as related to a sale of real property under a trust deed or mortgage, may plead in the answer that the trustee is not a necessary party by a verified denial, stating the basis for the trustee's reasonable belief that the trustee was named as a party solely in the capacity as a trustee under a deed of trust, contract lien, or security instrument.

(b) Within thirty (30) days after the filing of the trustee's verified denial, a verified response is due from all parties to the suit or proceeding setting forth all matters, whether in law or fact, that rebut the trustee's verified denial.

(c) If a party has no objection or fails to file a timely verified response to the trustee's verified denial, the trustee shall be dismissed from the suit or proceeding without prejudice.

(d) If a respondent files a timely verified response to the trustee's verified denial, the matter shall be set for hearing. The court shall dismiss the trustee from the suit or proceeding without prejudice, if the court determines that the trustee is not a necessary party.

(e) A dismissal of the trustee pursuant to subsections (c) and (d) shall not prejudice a party's right to seek injunctive relief to prevent the trustee from proceeding with a foreclosure sale.

(f) A trustee shall not be liable for any good faith error resulting from reliance on any information in law or fact provided by the borrower or secured party or their respective attorney, agent, or representative or other third party.