Delivery Point Validation processing can also resolve multiple matches from the ZIP + 4 database to increase the number of ZIP + 4 coded records in your address list.
The DPV option processes every ZIP + 4 coded record against the DPV files to resolve multiple matches to the ZIP + 4 database. Resolving ZIP + 4 multiple matches increases your ZIP + 4 match rate, but also increases processing time. For this reason, you may wish to turn off some of these options.
Use the DPVIN parameter to define the options for multiple match conditions. When verifying proper candidates for DPV processing, the multiple match condition is first checked at the ZIP Code level, carrier route, directional, and then suffix. Multiple match conditions can occur in multiple categories.
The DPVIN parameter includes options for unique ZIP Code and small town default assignments and multiple secondary components. The following figure provides examples of multiple matches that can be Delivery Point Validated.
For more information on setting up multiple match options, refer to the DPVIN in Chapter 1, Parameters in your CODE-1 Plus Reference Guide.
Figure 1: Multiple Match Examples