La. Civ. Code art. 2989 : Civil Code — OF THE DIFFERENT MODES OF ACQUIRING THE OWNERSHIP OF THINGS — REPRESENTATION AND MANDATE — MANDATE — GENERAL PRINCIPLES — Mandate defined TEXT PDF A mandate is a contract by which a person, the principal, confers authority on another person, the mandatary, to transact one or more affairs for the principal. La. C.C. § 2989 Acts 1997, No. 261, §1, eff. 1/1/1998.