International shipping uses postal code and country data that's too large to include in the main PostalPoint download, so it comes as a separate International Data Package.
Windows: download and run the Windows installer.
Mac: download and run the macOS installer.
Linux: it's installed and updated automatically. If you still see the warning, re-run the installation steps on the Download page.
Restart PostalPoint after installing.
The international data package is optional, but highly recommended, as it enhances the shipping process by customizing the shipping process with country-specific options, form labels, and city/state autofill using postal codes.