The USPS introduced Delivery Point Validation (DPV) to validate the accuracy of address data to the physical delivery point.
CODE-1 Plus does not validate addresses at the specific delivery-point level. CODE-1 Plus only confirms whether an address falls within the low-to-high address range encoded for the named street. CODE-1 Plus uses the DPV option to determine whether the actual address exists to the apartment or suite information level. The DPV option reduces your undeliverable-as-addressed (UAA) mail volume that results from inaccurate addresses to reduce postage costs and costs associated with the handling of inaccurate address information.
Delivery Point Validation processing also confirms whether an address is a commercial mail receiving agency (CMRA) that uses private mail boxes (PMB). You can use DPV to determine the potential validity of PMB information on an input address.
Although DPV can validate the accuracy of an existing address, it cannot be used to create address lists. The DPV product is a secure dataset of USPS addresses and does NOT contain addresses that are not delivered by the USPS.