Texas Property Code - PROP § 42.003. Designation of Exempt Property

(a) If the number or amount of a type of personal property owned by a debtor exceeds the exemption allowed by Section 42.002 and the debtor can be found in the county where the property is located, the officer making a levy on the property shall ask the debtor to designate the personal property to be levied on. If the debtor cannot be found in the county or the debtor fails to make a designation within a reasonable time after the officer's request, the officer shall make the designation.

(b) If the aggregate value of a debtor's personal property exceeds the amount exempt from seizure under Section 42.001(a), the debtor may designate the portion of the property to be levied on. If, after a court's request, the debtor fails to make a designation within a reasonable time or if for any reason a creditor contests that the property is exempt, the court shall make the designation.