During address matching and standardization, address lines are separated into components (analyzed), and compared to the contents of the CODE-1 Plus database. Any address information not used as part of matching is referred to as dropped address information. If a match is found, the input address is standardized according to the contents of the database.
If no database match is determined, CODE-1 Plus provides the option to normalize input addresses. The normalization process attempts to format the address lines according to conventions outlined in USPS Publication 28. When the normalization option is invoked and no database match is found for a particular address, CODE-1 Plus attempts to recognize the individual elements and formats them according to USPS conventions.