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.

PEPPOL

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

2.0.1

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 invoice.