MeF Exempt Organization Stakeholders: We are providing additional eXtensible Mark-up Language (XML) Schemas and Business Rules for the following forms for Tax Years 2017 (Processing Year 2018). Tax Year 2017 Schema Versions: Form 990x (990, 990-EZ, 990-PF): TY2017v2.3 Current Year Business Rule Updates: Form 990-N: TY2017v1.1 Form 1120-POL: TY2017v1.1 Form 8868: TY2017v1.1 990 Family Schemas and Business Rules Distribution is now through the Registered User Portal and your e-services mailbox. This mailbox is part of the Secure Object Repository (SOR). Users will access their mailbox in their existing e-services account to pick up the schema and business rules packages. Instructions for accessing the SOR mailbox The Schemas and Business Rules versions listed above will be used in ATS beginning March 11, 2018 and Production beginning March 18, 2018. XML Schemas The schemas are packaged by form type and version number. "Diff" files are included which identify the difference between the schema version listed above and the previous schema version. Business Rules Business Rules are packaged, by form type and version number. Two different formats are provided that contain identical information – Adobe (.pdf) and comma separated file (.csv). A column within the file identifies changes made from the previous version. Key Changes TY2017: Form 990x: Shared form changes. If you have any questions about the Schemas or Business Rules, please send your inquiry to the MeF Mailbox.