Many of my non profit clients with Forms 990T are receiving letters from the IRS the past couple of weeks that the IRS is not accepting mailed in Form 990s any more and they are subject to penalties. However, Proseries does not allow us to efile a form 990 that include a Form 990T.

How do we get around these letters and this is the first I heard the IRS stopped accepting mailed in Form 990's.

PS, most of 2019 form 990s mailed in have not been processed.