The tax year 2024 1041 Modernized e-File (MeF) Assurance Testing System (ATS) information is contained below. If you support these forms, you will need to contact the e-Help Desk for testing. Please monitor this page for any ATS Scenario updates. TY 2024 1041 MeF ATS scenarios 1041 MeF ATS scenario 1 PDF (11/13/2024) 1041 MeF ATS scenario 2 PDF (10/25/2024) 1041 MeF ATS scenario 3 PDF (11/13/2024) 1041 MeF ATS scenario 4 PDF (11/19/2024) For information and questions regarding ATS, please contact the e-Help Desk at 866-255-0654. Modernized e-File (MeF) Assurance Testing System (ATS)