27 November 2020 is the final deadline for invoice issuers to implement e-invoicing. After this date, invoice issuers will no longer be able to submit paper or PDF invoices to the Federal Government’s public contracting authorities. (Attachments, e.g. as PDF files, may only be submitted embedded in the XML data record.) It will then only be possible to submit e-invoices, as defined by the Federal Government’s Regulation on Electronic Invoicing, to the Federal Administration authorities (exceptions are governed by Section 3 (3) of the Federal Government’s Regulation on Electronic Invoicing).