TaxSlayer Pro Online recently updated the barcode that displays on the PDF of the D-400 (NC main form). If your site will be paper filing a North Carolina return, please access the return from Client List or click the print option from Client List to receive the update. This will generate the PDF with the current barcode NC DOR will need to properly process the mailed return. This does not impact electronically filed NC returns. Note: Previously paper filed NC returns prior to the barcode update will still be processed by NC DOR.