eInvoicing

CII

Proprietary format Reference
CII Invoice - D16B (SCRDM -CII) 2016 16B

These can be used to create message syntax which can be 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.

Factur-X

Proprietary format Reference
Factur-X Version 1.0.06 (ZUGFeRD v. 2.2) 01.03.2022

The Factur-X/ZUGFeRD standard is a hybrid electronic invoice format consisting of two components: a PDF file and an embedded XML file. The PDF file represents the visual part of the invoice and is readable by humans. The XML file contains invoice data in structured form, which is processed automatically and mechanically. The format includes different profiles of the invoice data, which are identical in Factur-X and ZUGFeRD.

PEPPOL

Proprietary format Reference
PEPPOL Access Point PEPPOL Access Point API - API Specifications

2.0.1 (3.0)

All European public administrations must be able to accept 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 eInvoice.