In these interlocutory appeals, MHCB (USA) Leasing and Finance Corp. ("MHCB") and Valero Refining-Texas, L.P. ("Valero Refining") (together, "the protesting parties"), who were plaintiffs below, and Galveston Central Appraisal District (" he District") and Galveston Central Appraisal District Review Board ("the Board"), who were defendants below, each appeal from the trial courts order granting in part and denying in part the Districts and Boards joint plea to the jurisdiction. See Tex. Civ. Prac. & Rem. Code Ann. Â§ 51.014(a)(8) (Vernon Supp. 2006). We determine (1) whether either or both of the protesting parties lacked standing to protest, and to seek judicial review of, the Districts and Boards complained-of actions and (2) whether the trial court lacked jurisdiction over the protesting parties requests for declaratory and injunctive relief when, at their core, those claims sought a determination of whether the District had the statutory authority unilaterally to rescind an appraisal agreement between itself and the protesting parties. We reverse the order and remand the cause for the trial court to render an order dismissing certain claims asserted by MHCB and to deny the Districts and Boards jurisdictional plea against certain of the claims of Valero Refining.