The party making a demand for inspection, copying, testing, or sampling shall serve a copy of the demand on the party to whom it is directed and on all other parties who have appeared in the action.
Code Civ. Proc. § 2031.040 — under California Code Civ. Proc..
Code Civ. Proc. § 2031.040
The party making a demand for inspection, copying, testing, or sampling shall serve a copy of the demand on the party to whom it is directed and on all other parties who have appeared in the action.