Texas Government Code - GOV'T § 1205.025. Time for Bringing Action; Pendency of Other Proceedings

(1) concurrently with or after the use of another procedure to obtain a declaratory judgment, approval, or validation;

(2) before or after the public securities are authorized, issued, or delivered;

(3) before or after the attorney general approves the public securities; and

(4) regardless of whether another proceeding is pending in any court relating to a matter to be adjudicated in the suit.