Use Custom Address Mapping Type

Under Home > Set Preferences > General tab > Defaults section > Address Mapping Type field, Custom option is available in the list of options. 

When the user set the Address Mapping Type as Custom, NetSuite uses the script that the user implemented for the Country. To check the country setup, perform the following steps:

     1. Navigate to Setup > Company > Countries.     
     2. Edit the Country (e.g. United States).
     
The script set in the Map field is used by NetSuite when Address Mapping Type field is set to Custom.