A plaintiff must allege that it is in possession of the underlying Note in order to establish that it has standing to prosecute the action. What information is required to complete a lost note affidavit?Collect the contact information of the parties involved: name, address, phone number, etc. In Wells Fargo Bank, N.A. v. Recover lost promissory notes with ease. The note represents the promise or agreement of the homeowner. If a lender produces a lost note affidavit in lieu of an original note or copy thereof then borrowers may attack the lost note affidavit's validity instead.