NYS Tax Dept Requesting W2

I just received NYS tax letter DTF-948-O. This letter seems to be a request for information on proof of wages and withholdings for New York State.

 

In taking a look at their checklist for acceptable proof of wages and withholdings, its asking me to send them:

W-2 forms (which i can do) ... and it also says if you claimed taxes were withheld from any other source of income, then send them (1099-R, 1099-MISC, 1099-G, or any other form to verify tax withheld.

 

I am wondering if I should send them all of my 1099's or not? For example, if I have a 1099-NEC where the state tax withheld info is blank, should I send that in? Or 1099-INTs where state tax info would be blank as well? I was thinking of only sending my W2s, since if state tax info is blank on 1099's then I wouldn't be claiming state tax was withheld... but want to make sure my response to them is complete. 

 

Looking for advice on what I should send and any ideas why i'd be receiving this letter for my 2021 NYS return. Anyone else had this happen and could share their experience?