Tex. Business Organizations Code § 101.155: CREDITOR'S RIGHT TO ENFORCE CERTAIN OBLIGATIONS.

A creditor of a limited liability company who extends credit or otherwise acts in reasonable reliance on an enforceable obligation of a member of the company that is released or settled as provided by Section 101.154 may enforce the original obligation if the obligation is stated in a document that is:

(1) signed by the member; and

(2) not amended or canceled to evidence the release or settlement of the obligation.

Acts 2003, 78th Leg., ch. 182, Sec. 1, eff. Jan. 1, 2006.