(a) A trustee shall serve a notification by the trustee as described in this section in the following events:

1. (1) When a revocable trust or any portion thereof becomes irrevocable because of the death of one or more of the settlors of the trust, or because, by the express terms of the trust, the trust becomes irrevocable within one year of the death of a settlor because of a contingency related to the death of one or more of the settlors of the trust.
2. (2) Whenever there is a change of trustee of an irrevocable trust.
3. (3) Whenever a power of appointment retained by a settlor is effective or lapses upon death of the settlor with respect to an inter vivos trust which was, or was purported to be, irrevocable upon its creation. This paragraph shall not apply to a charitable remainder trust. For purposes of this paragraph, “charitable remainder trust” means a charitable remainder annuity trust or charitable remainder unitrust as defined in Section 664(d) of the Internal Revenue Code.
4. (4) The duty to serve the notification by the trustee pursuant to this subdivision is the duty of the continuing or successor trustee, and any one cotrustee may serve the notification.

(b) The notification by the trustee required by subdivision (a) shall be served on each of the following:

1. (1) Each beneficiary of the irrevocable trust or irrevocable portion of the trust, subject to the limitations of Section 15804.
2. (2) Each heir of the deceased settlor, if the event that requires notification is the death of a settlor or irrevocability within one year of the death of the settlor of the trust by the express terms of the trust because of a contingency related to the death of a settlor.
3. (3) If the trust is a charitable trust subject to the supervision of the Attorney General, to the Attorney General.

(g) The notification by trustee shall contain the following information:

1. (1) The identity of the settlor or settlors of the trust and the date of execution of the trust instrument.
2. (2) The name, address, and telephone number of each trustee of the trust.
3. (3) The address of the physical location where the principal place of administration of the trust is located, pursuant to Section 17002.
4. (4) Any additional information that may be expressly required by the terms of the trust instrument.
5. (5) A notification that the recipient is entitled, upon reasonable request to the trustee, to receive from the trustee a true and complete copy of the terms of the trust.

(h) If the notification by the trustee is served because a revocable trust or any portion of it has become irrevocable because of the death of one or more settlors of the trust, or because, by the express terms of the trust, the trust becomes irrevocable within one year of the death of a settlor because of a contingency related to the death of one or more of the settlors of the trust, the notification by the trustee shall also include a warning, set out in a separate paragraph in not less than 10-point boldface type, or a reasonable equivalent thereof, that states as follows:

“You may not bring an action to contest the trust more than 120 days from the date this notification by the trustee is served upon you or 60 days from the date on which a copy of the terms of the trust is delivered to you during that 120-day period, whichever is later.”