On a project, we were using the Google Maps API to translate a US postal code into a latitude and longitude.
I bumped into a problem where a small number of postal codes would return a null result, despite being valid US postal codes.
I have no idea why this was the case. I thought maybe this postal code happened to overlap with a postal code in another country, so it just gave up and returned no results?
It didn't really matter why Google Maps was doing this for a handful of postal codes. I just wanted it to work.
So instead of sending just 12345 to the API, I would append the country code: 12345 US. This worked every time.
Hope this helps,
Joel
P.S. Have a weird API story like this? Hit reply and share!