General Information The 2015 v3.0 business rules have been updated from the v2.0 business rules. See the Nature of Change column. The 2015 v1.13 Error Codes have been updated with changes from the previous version. There are new AIREX error codes and one new AIRTN error code. There is no change to the ACA Information Returns Schema 2015 v8.0. (The schema versions 4.0 to 7.0 were internal release versions and not posted externally.) Please send any comments or feedback to the AIR Mailbox.