California Code, Family Code - FAM § 7894

(a) An order and judgment of the court declaring a child free from the custody and control of a parent or parents under this part is conclusive and binding upon the child, upon the parent or parents, and upon all other persons who have been served with citations by publication or otherwise as provided in this part.

(b) After making the order and judgment, the court has no power to set aside, change, or modify it.

(c) Nothing in this section limits the right to appeal from the order and judgment.