what to be checked before USCIS issuing a interview notice?

[Lafaso870]

Hi,
1) is it true that online status won't change when FP result is in?
2) what USCIS will need to check before issue an interview app?
3) or do they just issue the interview APP and do the checking in the background?

thanks

 

[namecheckvictim]

The only thing that usually runs in the background is name check, otherwise they check few things including FP results before scheduling interview.