eInvoicing
CII
You can use CII to create message syntax, which are exchanged globally between trading partners. It was developed in UN/CEFACT with input from many business organizations, such as GS1,EUROFER, CIDX, EDIFICE, AIAG/ODETTE/JAMA, GHX, UK e-Government, UK HM Customs & Excise, and EDS.PEPPOL
All European public administrations must support accepting invoices in electronic format from their suppliers, in compliance with the European standards approved by CEN: UN/CEFACT XML and UBL.The LSP Web Services Gateway provides connectivity to Access Point Providers (APP) through the PEPPOL Access Point invoice.
Factur X
Provides Factur-X electronic invoicing services to generate, validate, exchange, and process compliant invoices between businesses. The service embeds a user-readable PDF and a machine-readable XML file in a single invoice to support automated processing and compliance with French e-invoicing requirements.