Wisconsin Consumer Act.
1.85 Discrimination; unconscionable conduct.
(4) NOTICE OF ACTION AND RETENTION OF RECORDS….A record of all reasons for denial or a record of the denial form number and each alternative therein applied to the customer along with the credit application and all other related documentation shall be retained by the merchant in reasonable order accessible by reference to the name of the customer, for a period of 15 months from the date of notice of action on each credit application.