Boss Cart Documentation
From Bosscart Documentation
The address entered by your customers needs to be validated prior to the checkout to prevent the drop out at payment gateway, fake orders and cancellation of order.
Boss Cart Premium always validates the address (county/Region, City, Postal code and their combination in case of United Kingdom) and (State, City, Zip code and their combination in case of United States and other counties).
Boss Cart Premium maintains huge database of zip codes, cities and regions.
The countries that are listed in the countries drop down can always be set from shopkeeper admin panel. For example you are Shop Owner in United Kingdom and you want your products to be shipped only to United Kingdom or United States. You may set only United Kingdom and United States in the country drop down.
In addition to it you may select the counties/ States (in case of United Kingdom) and states ( in case of United States) you would like to ship to . For example you want to ship only to London and Liverpool. You can make only London and Liverpool appear in the drop down list for Counties/Region.
If you see any state or county/region missing in the database you my also add it from shopkeeper control panel
The cities and postal code or zip code entered by customers are always validated so that it does not fail at the payment gateways page.
The address verification also helps while defining the shipping cost for different regions.
For details on defining shipping cost can be viewed at Shipping Zones