What forms must be included in the application package? For registered owners, a vehicle verification or proof of payment on the lienholder's letterhead.For legal owners, a Certificate of Repossession. Search for various legal forms relevant to Sacramento County. How do I fill this out? Repossession is lawful only when the written contract for the purchase or lease of the vehicle states that the creditor has the right to repossess the vehicle. 1. Enter the lienholder's name and address. Loan assistance, information, and forms. To help you manage your loans easily and efficiently, all the forms you might need are here in one place. 1. Enter the lienholder's name and address.