In compliance with the United States Postal Service requirements,

Address Verification

matches the information in a single sub-building element with the reference data. If the Sub-building_1 information does not match,

Address Verification

compares the Sub-building_2 information. If the Sub-building_2 information does not match, Address Verification compares the Sub-building_3 information. Address Verification copies the unmatched sub-building information from the input address to the output address.

Address Verification

returns each level of sub-building information in a discrete output field.

Address Verification

continues to support two levels of sub-building information in formatted address line, delivery address line, and complete address output.