Tennessee Code Title 36. Domestic Relations § 36-5-805

(a) Each individual who is a party to any action pursuant to §§ 36-5-802, 36-5-803 and 36-5-804, or § 36-5-103(f), shall be required, and the department shall order the party to file with the local Title IV-D child support office, upon entry of an order by the department, for entry into the state registry of support cases, and to update, as appropriate, the parties' and, for subdivisions (a)(1)-(3), the child's or children's:

(b) Any update must be made within ten (10) days of the date of a change in circumstances of the person and the order shall give notice of this requirement.

(c) In any subsequent child support enforcement action, the delivery of written notice as required by Tennessee Rule of Civil Procedure 5 to the most recent residential or employer address shown in the department's records or the Title IV-D agency's records as required in subsection (a) shall be deemed to satisfy due process requirements for notice and service of process with respect to that party if there is a sufficient showing that a diligent effort has been made to ascertain the location and whereabouts of the party.