I wanted to bind ⌥+⌘+T to be able to use macOS’s tags feature using a keyboard shortcut in Finder.app.
The way to set it up is super vague, so I figured I would share that you need to do to make it work.
First, set it up in System Preferences > Shortcuts. Attach the shortcut to Finder.app. Make sure to use a … (ellipsis) character instead of typing 3 periods (…).
Then, make sure that in Finder preferences you have no favorite tags, otherwise it will not work. In the screenshot below you will see that there are no favorite tags.
This seems like a bug in OSX so I filed it as a Radar.