Tenn. Code Ann. § 29-14-105: Fiduciary powers and duties

Any person interested as or through an executor, administrator, trustee, guardian, conservator or other fiduciary, creditor, devisee, legatee, heir, next of kin, or cestui que trust, in the administration of a trust, or of the estate of a decedent, an infant, person adjudicated incompetent, or insolvent may have a declaration of rights or legal relations in respect thereto to:

(1) Ascertain any class of creditors, devisees, legatees, heirs, next of kin, or others;

(2) Direct the executors, administrators, or trustees to do or abstain from doing any particular act in their fiduciary capacity; or

(3) Determine any question arising in the administration of the estate or trust, including questions of construction of wills and other writings.