Texas Estates Code - EST § 505.101. Suit to Recover Debt

(a) On giving notice by a qualified delivery method to all creditors of a decedent in this state who have filed a claim against the decedent's estate for a debt due to the creditor, a foreign executor or administrator of a person who was a nonresident at the time of death may maintain a suit in this state for the recovery of debts due to the decedent.

(b) The plaintiff's letters testamentary or of administration granted by a competent tribunal, properly authenticated, must be filed with the suit.