If evidence of a claim is lost or destroyed, the claimant or an authorized representative or agent of the claimant may make an affidavit to the fact of the loss or destruction. The affidavit must state:
(1) the amount, date, and nature of the claim;
(2) the due date of the claim;
(3) that the claim is just;
(4) that all legal offsets, payments, and credits known to the affiant have been allowed; and
(5) that the claimant is still the owner of the claim.
Official text of the Texas Estates Code as published by the Texas Legislative Council.