California Code
CHAPTER 7 - General Rules of Pleading
Section 456.

456. In pleading a judgment or other determination of a court, officer, or board, it is not necessary to state the facts conferring jurisdiction, but such judgment or determination may be stated to have been duly given or made and to have become final. If such allegation be controverted, the party pleading must establish on the trial the facts conferring jurisdiction and creating finality.

(Amended by Stats. 1957, Ch. 1365.)