What kind of dispute, over what kind of transaction? Check(s)? Credit card? Debit card?
An affidavit of forgery would be useless and meaningless in connect with a card transaction. But if you're asking about a forged check, a further question comes to mind -- is the the drawer's signature that is allegedly forged, or an indorsement?
John S. Burnett
Fighting for Compliance since 1976
Bankers' Threads User #8