This user manual provides detailed instructions for completing the Qualified Vendor Contract application. We'll help you craft the best vendor contract agreement for your specific needs, and help you manage that relationship as long as you need it.To become a vendor with the city, you must complete the vendor self-registration process. It takes the city about two business days to approve the registration. The Vendor agrees to purchase the necessary insurance during the term of this agreement and upon request shall provide proof of such insurance to the Client. An exclusive vendor agreement protects vendors and their customers from working with a competitor and both sells a service or product in a specified market. To register, go to the Arizona Procurement Portal ("APP") website. Questions.