NJ is requesting 1099s

First time Turbotax user.  I've filed my 2021 FED and NJ State forms.  FED Refund received.  HOORAY!

For NJ however, I received a notice that I need to provide: "copies of W2s, and any 1099 statements showing New Jersey withholdings, and any PTE-K1s showing New Jersey tax paid on your behalf."

I will scan the appropriate 1099s showing my NJ tax withholdings, but I wonder WHY I NEED TO DO THIS?  I suppose NJ needs to confirm the data that I input in Turbotax, but shouldn't I have BEEN WARNED BY THE SOFTWARE that NJ might ask for this? Is this strictly a NJ thing?  Doesn't NJ already have copies of my 1099s?

Thanks for any response.