Find ATS scenarios, Known Issues and Solutions for the Information Return Intake System (IRIS). IRIS ATS testing begins November 2023 for information returns that will be processed in 2024. To receive a schema package, apply for an IRIS TCC. IRIS Schemas and Business Rules IRIS ATS Updates PY2024 IRIS ATS Scenarios Tax Period ATS Known Issues and Solutions Form 1099 Series ATS ScenariosPDF 2023 Form 1099 Series ATS Known Issues PY2023 IRIS ATS Scenarios Tax Period ATS Known Issues and Solutions Form 1099 Series ATS ScenariosPDF 2022 Form 1099 Series ATS Known Issues Publications IRIS Electronic Filing Application to Application (A2A) Specifications, Publication 5718PDF IRIS Test Package for Information Returns, Publication 5719PDF
