The tax year 2023 1042 Modernized e-File (MeF) Assurance Testing System (ATS) information is contained below. Currently, the 1042 Program has four scenarios to be tested. If you support the 1042 form family, you will need to contact the e-Help Desk to test the forms. Please monitor this page for any ATS scenario updates. TY 2023 1042 MeF Forms ATS scenarios 1042 MeF ATS Scenario 1 (Form 1042) PDF – 11/07/2023 1042 MeF ATS Scenario 2 (Form 1042) PDF – 11/07/2023 1042 MeF ATS Scenario 3 (Form 1042) PDF – 11/07/2023 1042 MeF ATS Scenario 4 (Form 1042) PDF – 11/07/2023 ATS known issues and solutions Any updates made to the 1042 scenarios can be found in the TY 2023 1042 MeF ATS known issues and solutions document. For information and questions regarding ATS, please contact the e-Help Desk at 866-255-0654. Modernized e-File (MeF) Assurance Testing System (ATS) updates Tax year 2023 1042 MeF schemas and business rules
