If you submit an address with sub-building information and the associated reference data doesn't contain sub-building information at all for the address, Address Verification copies the input sub-building information to the output address. The engine can return two levels of sub-building information in the output.

If your input address includes a sub-building descriptor, please enter the full descriptor. If you do not include the range at the end of the input string, you must provide the complete sub-building descriptor along with the range.

For example: Enter

APT 7

in your input address, instead of

AP

.