Ableton live needs to recognize that your midi keyboard is connected to your computer before you will be able to use it.
Ableton live midi controller setup.
A midi controller is a midi enabled hardware device capable of transmitting midi note or cc data with any of the following tactile parameters.
Nick at ableton sent me the link to your page.
Http bit ly learnlive10 abletonlive learnlive live10 ableton.
Very useful and i located a midi script that shows up in ableton for my controller.
For instance you could use a midi controller to play notes in midi instruments or to adjust the filter cutoff frequency in a device.
Once your keyboard is set up you can select it in live and you can start recording midi.
How to set up midi in ableton live 10.
Keyboard encoders buttons dials or sliders.