Tex. Bus. & Com. Code § 51.054
A principal seller who is required to obtain a bond or establish a trust account under Subchapter C shall contemporaneously file with the secretary of state a copy of:
(2) the formal notification by the depository that the trust account is established.
Acts 2007, 80th Leg., R.S., Ch. 885 (H.B. 2278), Sec. 2.01, eff. April 1, 2009.