La. Code Civ. Proc. art. 700
Current with operative changes from the 2024 Third Special Legislative Session
When a plaintiff sues as an agent to enforce a right of his principal, or as a legal representative, his authority or qualification is presumed, unless challenged by the defendant by the timely filing of the dilatory exception. When so challenged, the plaintiff shall prove his authority or qualification on the trial of the exception.
La. C.P. § 700