USPS® CASS™/DPV® API Prototype: When one and only one unambiguous CASS standardized DPV confirmed response is returned from Mail*SERVE, the input address can be replaced automatically with the CASS/DPV solution.
Topic: CASS standardization - DPV Delivery Point Confirmation Demonstration: The most common CASS validation/DPV confirmation result is one unambiguous CASS candidate record.
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CASS™/DPV® Confirmation Request
Original address:
2405 LILION STR
FT WORTH TX
Standardized address:
2405 LILLIAN ST
FORT WORTH TX 76111-1245
Existing Applications
When Mail*SERVE returns one and only one recommended address, the application should replace the original address with the standardized address. The Mail*SERVE address reliability, quality flags, DPV, eLOT® and county values shown are available to your application.
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Integration CASS™ DPV® API 
