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Oxalis -the leading Peppol Access Point

by Trygve Skibeli, Chairman of the board NorStella

Oxalis is the leading open source implementation supporting the provision of Peppol eDelivery Services (AS4) for the Peppol network. Provided below is a short introduction to Peppol and Oxalis.

Peppol is:

  • A set of artifacts and specifications (owned and maintained by OpenPeppol)

  • Enables trading partners to exchange standards-based electronic documents over the Peppol network. These documents include e-Orders, e-Advance Shipping Notes, eInvoices, eCatalogues, Message Level Responses, etc.


Peppol Access Points (i.e. Oxalis):

  • Connect users to the Peppol network and exchange electronic documents based on the Peppol specifications.

  • Buyers and suppliers are free to choose their preferred single Access Point provider to connect to all Peppol participants already on the network. (‘Connect once, connect to all’). 

Practical benefits of using Peppol

Since the 1st of July 2011, it became mandatory for all central government entities in Norway to receive invoices electronically in a standard format; and from the 1st of July 2012 it became mandatory for central government entities to require their suppliers to invoice them electronically using the EHF format – a national implementation of the Peppol Business Interoperability Specifications (BIS) – recommending use of the Peppol Transport Infrastructure for business document exchange.

Both buyers and sellers can choose to establish their own Access Point (for example Oxalis) or to enter into an agreement with any of the service providers connected to the Peppol Transport Infrastructure in Norway, or throughout Europe.

Official statistics from Norway shows that the number of EHF/BIS ordering transactions increased 100% from January 2020 to August 2020 (700.000 to 1.400.000). 

List of usefull links
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