How To Write A Letter Of Dispute For Parking Ticket . If the person wants to contest a parking ticket, they should not pay it. 1st, do you actually believe that you have a valid grounds for making the appeal? Gross Overkill Dispute Letter for Palo Alto Parking Ticket Statutory from www.scribd.com 1st, do you actually believe that you have a valid grounds for making the appeal? If you do then state those grounds. This document is also available to download for free as a word template.