This is a UPS quoting extension that retrieves shipping quotes based on either weight or a "packing algorithm." It doesn't produce labels.
If all your product dimensions are configured, you can choose the algorithm-based method; otherwise, select the weight-based option.

If none of the products in the cart have dimensions configured, it will fall back to weight-based quotes. If some products have dimensions and others don't, it will attempt to retrieve valid rates by using weight for those without dimensions and dimensions for those that do.
NOTE: This is generally effective at estimating packing for various products, but it's not guaranteed to be 100% accurate—though it should be close.

You’ll need to obtain an OAuth client ID and secret for the extension to function properly.
Use the Extension Installer to install the module, then navigate to Extensions > Shipping > UPS OAuth.
If you're using this in the USA, make sure the state code is two letters (e.g., CA for California, FL for Florida, etc.).

NOTE: This has been tested in the USA and should work well. For other counties this has had only a few beta testers so please note we will work with you to ensure it works in your country, and ask you work with us to get it working properly. We reserve the right to refund your purchase and ask you to discontinue use if we can't get it working in your country.