Cal. Civ. Code § 1749.7
(a) Every marketplace shall ensure that their terms and conditions regarding commercial relationships with marketplace sellers meet all of the following requirements:
(c) If a marketplace decides to suspend or terminate a marketplace seller based upon an alleged violation of law or a term, condition, or policy of the marketplace, the marketplace shall provide the marketplace seller, without undue delay, with a written statement of reasons for that decision. The written statement of reasons shall, at a minimum, do all of the following:
(d) For purposes of this section, the following definitions shall apply: