O.C.G.A. § 48-5-239: Affidavit of illegality by person against whom execution issues.

If execution as provided in subsection (b) of Code Section 48-5-238 issues for an amount greater than the amount due or if the defendant denies on oath owing any part of the amount claimed, the defendant may cause an issue to be formed on the execution by filing an affidavit of illegality according to the rules governing other illegalities. Each issue shall be tried by a jury at the first term of the superior court held after the filing of the affidavit.