To claim this credit, you must have employees working in the eligible area, known as the Designated Geographical Area (DGA). To receive APPROPRIATE CREDIT for education and training, include a copy of your diploma, transcript, certificate, or license as directed on the bulletin. 2.Use this sample letter to dispute mistakes on your credit report. Our guide will teach you how to write a letter of explanation, plus offers a free template to help you write one of your own. One way to fix an error on your credit report is to write a credit dispute letter and mail it to one or more credit bureaus. If not completing the fillable on-line version of this application, please fill out this application carefully in ink. 1. In the sample letter, fill in your personal information.