Starting November 2020 in the EU machine-readable invoices will be mandatory in the public sector (https://eur-lex.europa.eu/eli/dir/2014/55/oj https://eur-lex.

Starting November 2020 in the EU machine-readable invoices will be mandatory in the public sector (https://eur-lex.europa.eu/eli/dir/2014/55/oj https://eur-lex.europa.eu/eli/dir/2014/55/oj). As far as I understand there are at least two standards (I know of in Germany): XRechnung and ZUGFeRD/Factur-X (which is PDF A/3 with embedded XML). http://fnfe-mpe.org/factur-x/factur-x_en/ http://fnfe-mpe.org/factur-x/factur-x_en/