I want to verify customer enter zip code is correctly match with the region.
Region: New york
If the customer enters the wrong zip code for the region, it throws an error "your zipcode and region need to match"
I think I need to use the USPS API.
I created an account in USPS API.
How to implement this functionality in the checkout page and my account save address page.
I followed this below link. But It doesn't work for me.
Any help, experience and knowledge sharing would be appreciated