1 Tex. Admin. Code § 81.19
Except for travel advances provided by §81.23 of this title (relating to Travel Using Chapter 19 Funds Authorized), all payments made from Chapter 19 funds will be made only after the goods or services have been received. An invoice from the vendor must be submitted with all Chapter 19 Purchase Voucher Forms. The signed timesheet required by §81.22 of this title (relating to Use of Chapter 19 Funds for Temporary Employees) will be considered a "vendor's invoice" for purposes of this rule. Warrants issued by the State Comptroller of Public Accounts will be payable to the county, county employees for travel reimbursements, or to third party vendors or providers of goods or services, as the case may be. Except for travel expenses authorized by §81.23 of this title (relating to Travel Using Chapter 19 Funds Authorized), no cash payments may be made from Chapter 19 funds. All disbursements of Chapter 19 funds must be made by check or warrant.
Source Note:The provisions of this §81.19 adopted to be effective October 1, 1995, 20 TexReg 7277.