Tax Year 2018 7004 MeF ATS Information The Tax Year 2018 7004 Modernized e-File (MeF) Assurance Testing System (ATS) information is contained below. Please monitor this page for any ATS Scenario updates. Tax Year 2018 7004 MeF ATS Scenarios 7004 MeF ATS Scenario 1 PDF - 09/28/2018 7004 MeF ATS Scenario 2 PDF - 09/28/2018 7004 MeF ATS Scenario 3 PDF- 09/28/2018 7004 MeF ATS Scenario 4 PDF - 09/28/2018 7004 MeF ATS Scenario 5 PDF - 09/28/2018 For information and questions regarding ATS, please contact the e-Help Desk at 1-866-255-0654. Modernized e-File (MeF) Assurance Testing System (ATS) Updates Page
