PROB §19053: (a) If the trustee believes that notice to a particular creditor is or may be required by this chapter and gives notice based on that belief, the trustee is not liable to any person for giving the not

(a) If the trustee believes that notice to a particular creditor is or may be required by this chapter and gives notice based on that belief, the trustee is not liable to any person for giving the notice, whether or not required by this chapter. (b) If the trustee fails to give notice required by this chapter, the trustee is not liable to any person for that failure, unless a creditor establishes all of the following: (1) The failure was in bad faith. (2) The creditor did not have actual knowledge of the proceedings under Chapter 1 (commencing with Section 19000) sooner than one year after publication of notice to creditors under Section 19040, and payment would have been made on the creditor’s claim if the claim had been properly filed. (3) Within 16 months after the first publication of notice under Section 19040, the creditor did both of the following: (A) Filed a petition requesting that the court in which the proceedings under Chapter 1 (commencing with Section 19000) were initiated make an order determining the liability of the trustee under this subdivision. (B) At least 30 days before the hearing on the petition, caused notice of the hearing and a copy of the petition to be served on the trustee in the manner provided in Chapter 4 (commencing with Section 413.10) of Title 5 of Part 2 of the Code of Civil Procedure. (c) Nothing in this section affects the liability of the trust estate, if any, for the claim of a creditor, and the trustee is not liable to the extent the claim is paid out of the trust estate. (d) Nothing in this chapter imposes a duty on the trustee to make a search for creditors of the deceased settlor.