The following links provide XML (Extensible Markup Language) schema information, Business Rules (reject criteria) and related announcements for Software Developers and Transmitters who are interested in developing software for Modernized e-File (MeF). Current Valid XML Schemas and Business Rules for Exempt Organizations Returns Modernized e-File (MeF) Status Page Modernized e-File (MeF) Exempt Organizations Providers Publications: Publication 5078, Modernized e-File (MeF) Test Package Business SubmissionsPDF Publication 4163, Modernized e-File Information for Authorized e-File Providers for Business ReturnsPDF Publication 4164, Modernized e-File Guide for Software Developers and TransmittersPDF User Guides: Automated Enrollment (AE)PDF (Rev 10/2007) MeF Submission Composition Guide - Modernized e-File SystemPDF (Rev 4/2015) Additional Information: Current Modernized e-File Stylesheets Modernized e-File (MeF) Program Information
