Some regions use a 'grid system' with both a north/south and east/west coordinate to assist police and fire personnel in finding addresses. In some areas, this may be the only address given to a location. This article explains the proper way to geocode these locations using Address Finder Web Service.
Ignore the houseNumber field. Input the entire street address as the street.
ex: <street>210 N 1950 W</street>
Input the rest of the address as usual, including city, state_prov and zone.