How to use the template: 1. In the sample letter, fill in your personal information.FC Letter of Credit Template. Use this sample letter to dispute mistakes on your credit report. Get your free copy here! If your lender flags a portion of your mortgage application, you might need to draft a letter of explanation to move forward with the homebuying process. This application can be filled out on your PC; if hand-written, please print legibly. Please use black or blue ink only. The official home page of the New York State Unified Court System. We hear more than three million cases a year involving almost every type of endeavor.