Arkansas Code Title 18. Property § 18-60-403. Interested persons

(a) Every person having an interest as is specified in § 18-60-401, whether in possession or otherwise, and every person entitled to dower or curtesy in the premises, if it has not been admeasured, shall be made a party to the petition.

(b) In cases in which one (1) or more of the parties, or the share or quantity of interest of any of the parties, is unknown to the petitioner, or uncertain or contingent, or the ownership of the inheritance shall depend upon an executory devise, or the remainder shall be contingent so that the parties cannot be named, it shall be so stated in the petition.