Make sure these settings are enabled on your Xerox printer:
For CK devices you shouldn't have to change anything to install it. The one exception is the proxy if it's not automatically configured.
For other devices well that's complicated depending how far back you're asking about and firmwares.
I'm looking for a list of all the settings that are required on an MFP that need to be turned on/off enabled/disabled/configured so that when I try to install the mobile print icon and functionality to an MFP that they are there.
If I've missed the page when I RTFM, then apologies please let me know which page it's on.