Hi there, 

Regarding the 2020 EXM US 990T E-File Reject F990T-037 Looking for Form 4136 - IRS Notice Received When Paper Filed

When filing a paper return due to a software limitation, contact the IRS e-File Help Desk at (866) 255-0654 and get authorization to file the paper return.  This unexpected behavior has been determined to be working as designed. The current diagnostic experience is under review to determine if additional enhancements can be utilized to improve this experience.  

If you receive letters for penalties due to software limitation, inform the IRS of the software limitation for reasonable cause.

Hope this helps! 

-Betty Jo