Obviously, I read over the guide for Komplete Kontrol S88 mk2 (Japanese). I followed it, but sustain pedal (Yamaha FC3A) did not work. Thank you.
Thanks for paying attention to my question.
I am using the Komplet Kontrol Software.
I did it after reading a similar QA in the community and fortunately it worked.
I switched the main unit (keyboard) back on once, then put the pedal in and re-set it as follows.
Mode = Continuous. Invert = switch to the right. Swap T/R = switch to the left. Assign Type = Ctrl Change. MIDI Channel = 1 ; Number = 64. Range from 0 to 127. Calibrate - Follow Instructions
For a sustain pedal, the "Mode" should not be continous, that would be for an Expression pedal so you must be reading the wrong info for a Sustain pedal.
Should be:
https://support.native-instruments.com/hc/en-us/articles/115005166305-How-to-Configure-Sustain-Expression-Pedals-on-KOMPLETE-KONTROL-Keyboards
Are you using the Komplete Kontrol Software standalone? Or in a DAW?