California Code, Civil Code - CIV § 1088

(a) A listing may not be placed in a multiple listing service unless authorized or directed by the seller in the listing.

(b) If an agent or appraiser places a listing or other information in the multiple listing service, that agent or appraiser shall be responsible for the truth of all representations and statements made by the agent or appraiser of which that agent or appraiser had knowledge or reasonably should have had knowledge to anyone injured by their falseness or inaccuracy.

(c) A multiple listing service shall retain and make accessible on its computer system, if any, all listing and other information placed in the multiple listing service by an agent or appraiser for no less than three years from the date the listing was placed in the multiple listing service.

(d) This section shall not alter the obligations of a licensed real estate broker to retain documents as specified in subdivision (a) of Section 10148 of the Business and Professions Code.