ACE Equestrian Pro4mance Four Digit # I.D.Effective 12 1 2023, all horses out of a stall being ridden, lunged, exercised at USEF H J horse shows will be required to wear their assigned competition number for identification. Grab a number I. D. to store in your trunk, or to outfit your barn and staff so you're always prepared when on show grounds. This way, your actual competition numbers won't get lost, or destroyed in inclement weather. The number I. D. can be changed to any horse's