The value of tmnxMobPdnApnSelectMsProvided specifies if the Mobile
Station (MS) provided Access Point Name (APN) selection mode is
allowed or not. Selection mode verification will be used to ensure a
MS's subscription to use this APN. This setting must mach the
corresponding setting on the SGSN/MME. If the two settings are not
identical, the PGW/GGSN rejects the session with a cause code user
authentication failed.