I also have the same issue. In my case, I think it's triggered by having points being carried over from
a house refinance several years ago. After years of filing itemized deductions on schedule A, I'm now taking the standard deduction. I'm no tax expert but as best I can figure out, I think the MN return is looking for info from Schedule A. To complicate matters, line 10 on MN MS1A is used for both a seller-financed mortgage situation and the situation where points are spread over the life of the loan (also no 1098 for tax year 2018). TurboTax's "solution" is to say "yes" to the question about buying from a seller who didn't give me a 1098 and asks me to give their ID # (SSN) and address of the seller. However, that solution isn't relevant to my situation. After several phone calls to TurboTax support and tech support with no real progress, I decided to just enter a bunch of 0's for ID # and enter "not applicable" in the address line on MS1A but I wasn't able to manually type an entry in the boxes on the form. The solution from TurboTax says to enter the info on my FEDERAL taxes but I don't have a Schedule A. I think the MS1A worksheet is trying to pull from a Schedule A that I don't have. My federal return was accepted and when I called the MN Revenue Service, they told me they think this is a software issue. They would accept a return without the ID#/address on line 10 for a points carryover situation but it seems that TurboTax can't go forward without it. And even though TurboTax says the state of MN rejected it, the MN Revenue service looked up my account and has no record of even receiving a transmission, much less rejecting it. I'm going to give TurboTax a week or so to fix it, and then I'm submitting my forms manually and requesting that TurboTax refund my state filing fee. I'm posting a summary of my layman's attempt to sort this out as a last hope that someone pays attention and fixes it!