The Auto Correct City option may be selected from the DynamicZip Setup window
With the option turned on, in cases where there is more than one city sharing a ZIP Code, DynamicZip will use the Sql Soundex function. The choice is made by comparing the current city value with all the cities that share the current ZIP. As of Build73 preference is given to cities that begin with the same letter as the current city value.
If the Auto Correct City option is off, then in cases where there is more than one city sharing a ZIP Code, the DZ Customer Address Correction window will not modify the customer address record.