La. Stat. tit. 9 § 2231

Current with changes from the 2024 legislative session effective on or before 7/1/2024, from Acts 2,3, 6-535, and 580-647
Section 9:2231 - Causes of action; procedure

If a cause or right of action accrues to a beneficiary against a trustee or a settlor or both, to a trustee against a beneficiary or a settlor or both, or to a settlor against a beneficiary or a trustee or both, the action may be by summary proceeding.

La. R.S. § 9:2231