Tex. Alco. Bev. Code § 102.17

A distiller and rectifier, winery permittee, or nonresident seller of liquor and the holder of a wholesaler's permit may enter into a contract for the sale and purchase of a specified quantity of liquor to be delivered over an agreed period of time, but only if the contract is first submitted to the commission or administrator and found by the commission or administrator not to be calculated to induce a violation of this code.