Issue in law
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In pleading. An issue upon matter of law, or consisting of matter of law, being produced by a demurrer on the one side, and a joinder in demurrer on the other.
3 Bl. Comm. 314; 3 Steph. Comm. 572, 580. See Code Civ. Proc. Cal. § 589.