Problem with a TurboTax Query in Dividend Section

[Rates Payer]

I see a problem with a dividend entry screen and US Government interest. 

I have mutual funds that throw off a percentage of income from US Government interest.  The entry screen on TurboTax says: "Do these uncommon situations apply?" One choice is "A portion of these dividends is US Government interest." Well, that obviously applies to me. (And millions of other, I presume, so it's not that 
"uncommon.") 

However, the problem is the same screen gives this warning: "Only make changes here if any info from your form is missing or inaccurate."  Huh? 

First, what "document" is TurboTax referring to -- the 1099-DIV from the mutual fund company?  How do I know if that is inaccurate?

More importantly, unless I check this box, Turbo Tax is not going to know that I have interest acquired from US Government obligations and the full interest will be taxed by my state. (My state doesn't tax federal government interest.)  Why is Turbo Tax warning me not to check this box "A portion of these dividends is US Government interest" unless my 1099-DIV is wrong? 

[SteamTrain]

@Rates Payer 

The 1099-DIV is correct, at least as far as what is posted on the actual 1099-DIV form...it's just that the % from US Govt bonds isn't showing.  It's something that has to be provided by the user  (IF they want it to be deducted from their state income.)

So, in a way, the $$ From US Govt bonds is "missing".....and you are providing the missing information.