For stages requiring only a single hit on a target, the requirement to have 5 points down for a failure to neutralize penalty doesn't work. (Think a single down-3 hit on a paper target requiring one hit.)
The warning is not triggered on stages you've marked as Limited.
You can bypass the warning either one-time-only, or for the rest of this score entry session. (The warning is reset when you choose a different match or restart ForScore.)
To bypass it for this specific entry, just click OK
To bypass it for the rest of this entry session, mark the Temporarily disable FTN warnings check box and then click OK.
You can turn off the FTN warning entirely in Program Preferences.