I have found that as long as you supply the minimum that's required for your flight, you're generally OK. ATC is not going to come on board to check whether the stuff you failed to mention is really U/S or anything.
For a 430W it's probably VOGY, but it depends on what's actually enabled.
V=VHF radio
Y=8.33 kHz spacing capable (but check that that's enabled in the AUX setup menu)
O=VOR - but it may also be ILS
G=GPS. Obviously