Tex. R. App. P. 12.2

As amended through February 20, 2024
Rule 12.2 - Docket Numbers

The clerk must put the case's docket number on each item received in connection with the case and must put the docket number on the envelope in which the record is stored.

(a)Numbering System. Each case filed in a court of appeals must be assigned a docket number consisting of the following four parts, separated by hyphens:
(1) the number of the court of appeals district;
(2) the last two digits of the year in which the case is filed;
(3) the number assigned to the case; and
(4) the designation "CV" for a civil case or "CR" for a criminal case.
(b)Numbering Order. Each case must be docketed in the order of its filing.
(c)Multiple Notices of Appeal. All notices of appeal filed in the same case must be given the same docket number.
(d)Appeals Not Yet Filed. A motion relating to an appeal that has been perfected but not yet filed must be docketed and assigned a docket number that will also be assigned to the appeal when it is filed.

Tex. R. App. P. 12.2