La. Stat. tit. 9 § 5622
All informalities of legal procedure connected with or growing out of any sale at public auction or at private sale of real or personal property made by any sheriff of the Parishes of this State, licensed auctioneer, or other persons authorized by an order of the courts of this State, to sell at public auction or at private sale, shall be prescribed against by those claiming under such sale after the lapse of two years from the time of making said sale, except where minors or interdicted persons were owners or part owners at the time of making it, and in the event of such ownership or part ownership by said minors or interdicted persons, the prescription thereon shall accrue after five years from the date of public adjudication or private sale thereof.
La. R.S. § 9:5622