Q: Translation inserted by Moderator (translation by DeepL)
How to configure the PIONEER DDJ SB2 controller to TRAKTOR PRO3
You will need do make a custom mapping for the SB or look over at DJTT for already existing mapping files like this one:
https://maps.djtechtools.com/mappings/5056
Audio interface will need configuring too. In theory, what you need to do is select the SB and your "Audio Device" in preferences and then configure all chanels at the "Output Routing" section.
Post screenshots of your audio device settings if you need more help but should be fairly straight forward to do and there are many useful Youtube videos on how to set the audio and midi in Traktor.