Find ATS scenarios, known issues and solutions for the Information Return Intake System (IRIS). IRIS ATS testing begins May 2023. To receive a schema package, apply for an IRIS TCC. IRIS Schemas and Business Rules ATS Scenarios Tax Year 2022/Processing Year 2023 IRIS ATS Scenarios Tax Period ATS Known Issues and Solutions Form 1099 Series ATS Scenarios 2022 Update TBD Known Issues for Scenarios
