The Tax Year 2023 Form 720 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 2023 Form 720 MeF ATS Scenarios 720 MeF ATS Scenario 1PDF 720 MeF ATS Scenario 2PDF 720 MeF ATS Scenario 3PDF For information and questions regarding ATS, please contact the e-help Desk at 1-866-255-0654.