Known Issues and Solutions are temporary workaround solutions to allow returns to be e-filed. A separate Known Issues and Solutions file is available for each tax year. Known Issues and Solutions reference back to Tax Year 2006, prepared in 2007. Files for Known Issues and Solutions Tax Year Known Issues and Solutions Files by Form Family 2022 720/94x/990/1040/1040-NR/1041/1042/1065/1120/1120-POL/2290/4868/7004/8849/8868XLSX -- (Revised 05/03/2023) 2021 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849XLSX -- (Revised 03/02/2023) 2020 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849XLSX -- (Revised 02/23/2023) 2019 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849XLSX -- (Revised 05/18/2022) 2018 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849XLSX -- (Revised 08/07/2020) 2017 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849XLSX -- (Revised 10/31/2018) 2016 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849XLSX -- (Revised 03/29/2018) 2015 1120/1065/7004/1040/4868/990/1120POL/8868/94x/1041XLSX -- (Revised 07/27/2016) 2014 1120/1065/7004/1040/4868/990/1120POL/8868/94x/1041XLS -- (Revised 04/12/2016) 2013 1120/1065/7004/1040/4868/990/1120POL/8868/94x/1041XLS -- (Revised 07/07/2016) 2012 1120/1065/7004/1040/4868/990/1120POL/8868PDF -- (Revised 06/26/2013) 2011 1120/1065/7004/1040/4868XLS -- (Revised 10/04/2012) 2010 1120/1065/7004/1040/4868XLS -- (Revised 09/13/2011) 2009 1120/1065/7004XLS -- (Revised 11/19/2010) 2008 1120/1065/7004XLS -- (Revised 09/03/2010) 2007 1120/1065/7004XLS -- (Revised 08/24/2010) 2006 1120/1065/7004PDF -- (Revised 06/29/2007) Modernized e-File (MeF) Schemas and Business Rules
