Release 2 schema directory structure In Release 2, 2003V21 and beyond, the schemas directory structure has changed. Basically, the inner version directories (e.g. V2003_07) have been removed, and the root directory, TY2003, has been renamed to 2003V21 to indicate the tax year and return version. (see the structure changes below)

Also, note that the version of the transmission structures (TransmissionHeader, AcknowledgementHeader, and TransmissionAcknowledgement), which are found in efileMessage.xsd, may be a different version (currently 2003V21) from the return version (2003V21) in the future, because they are not specific to a return.

OLD directory structure:

TY2003/

        Common/
                V2003_07/
                        efileMessage.xsd
                        efileTypes.xsd
                        SOAP.xsd

        CorporateIncomeTax/

                Common/
                        V2003_07/
                                IRS1040ScheduleF/
                                IRS1118/
                                . . .

                Corp1120/
                        V2003_07/
                                Instances/
                                IRS1120/
                                . . .

                Corp1120S/
                        V2003_07/
                                IRS1120S/
                                IRS1120SScheduleD/
                                . . .

NEW directory structure:

2003V21/

        Common/
                efileMessage.xsd (transmissionVersion="2003V21")
                efileTypes.xsd
                SOAP.xsd

        CorporateIncomeTax/

                Common/
                        IRS1040ScheduleF/
                        IRS1118/
                        . . .

                Corp1120/
                        Instances/
                        IRS1120/
                        . . .

                Corp1120S/
                        IRS1120S/
                        IRS1120SScheduleD/
                        . . .