Tex. Nat. Res. Code § 31.016

The commissioner shall designate one of his clerks as the abstract clerk and shall assign to him the special duty to correct the abstracts of patented, titled, and surveyed real property required to be kept in the land office to reflect errors, changes caused by cancellation of patents and in county lines, and the creation of new counties and to add new patented surveys on the date they are patented.