Cal. Fam. Code § 8616.5
(b)
(2) The terms of a postadoption contact agreement executed under this section shall be limited to, but need not include, all of the following:
(e) A postadoption contact agreement shall contain the following warnings in bold type:
(h) A postadoption contact agreement may be modified or terminated only if either of the following occurs:
(2) The court finds all of the following:
(C) The party seeking the termination or modification has participated, or attempted to participate, in good faith in mediation or other appropriate dispute resolution proceedings prior to seeking court approval of the proposed termination or modification.
Documentary evidence or offers of proof may serve as the basis for the court’s decision. No testimony or evidentiary hearing shall be required. The court shall not order further investigation or evaluation by a public or private agency or individual absent a finding by clear and convincing evidence that the best interests of the child may be protected or advanced only by that inquiry and that the inquiry will not disturb the stability of the child’s home to the detriment of the child.
(k) The court shall not set aside a decree of adoption, rescind a relinquishment, or modify an order to terminate parental rights or any other prior court order because of the failure of a birth parent, adoptive parent, birth relative, including a sibling, an Indian tribe, or the child to comply with any of the original terms of, or subsequent modifications to, the postadoption contact agreement, except as follows:
(m)
(2)