​​Registrants with a login can make changes and cancellations online via My Registrations. Cancellations received/processed by January 11, 2021, are fully refundable. Registrants who cancel after January 11, 2021, and no-shows are responsible for paying the full registration fee. No substitution or cancellation refund is available once the online course begins. If you have difficulty cancelling online, please contact Accounts Receivable at (703) 907-6875,​ or fax to (703) 907-5951. ​