New mandatory format

Suppliers to the public sector should be aware that it is mandatory to send electronic invoices in OIOUBL, and that OIOXML is no longer a valid format as a mean of communication with public authorities in Denmark. OIOUBL has been mandatory as a mean of e-Invoicing with the public sector since 1. May 2011 as stated in the “Executive Order on Information in, and Transport of, OIOUBL Electronic Invoices for Electronic Settlement with Public Authorities”.

More information on OIOUBL is available at:

http://en.itst.dk/it-architecture-standards/standardisation/data-standardisation/e-business-standardisation/oioubl-common-standards-for-e-business-documents

Information on OIOXML

OIOXML was previously the mandatory format for sending electronic invoices to the public sector. Information regarding OIOXML can be found in the former Executive Order on Electronic Invoicing (“Executive Order on OIOXML Electronic Invoicing”), which includes a FAQ section together with associated notes:

 Executive Order on Information in OIOXML Electronic Invoices

Supplementary material

Below are a number of documents of relevance to those who wish to establish their own test environment. See also the section on validation.

 Recommended field lengths for the use of OIOXML electronic invoices

 Short note on usage of Schematron and example schematron schema for extra validation of elements in ubl that cannot be validated by W3C xml Schema

Graphic presentation of electronic invoicing

Here are examples of the use of xslt stylesheets with OIOXML electronic invoices. The stylesheets will be updated on a regular basis. Last updated 1 May 2005.

 Sample stylesheets for display of Danish e-invoices

Document regarding amounts, prices, rates and quantities in electronic invoices.