Welcome to UBL.XML.org.

This is the official community gathering place and information resource for the OASIS UBL (ISO/IEC 19845) International Standard. UBL defines a royalty-free library of standard electronic XML business documents such as purchase orders and invoices.

This is a community-driven site, and the public is encouraged to contribute content. Find the appropriate area to contribute to by hovering your pointer over the site area titles listed in orange banner above. This will briefly reveal the area description in a small pop-up box. For more detail, please see our policies and descriptions regarding posting content to certain areas.

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OASIS UBL Adoption Subcommittee launches new web site

The newly formed Adoption Subcommittee has launched a new service for support of UBL implementtions.

The UBL.XML.org website is an OASIS Focus Area established to provide a forum for those implementing UBL to share ideas, find resources and promote good practices.


Public Review Draft for OASIS UBL 2.0 Errata Document

OASIS announced a 15-day review period for the specification "UBL 2.0 Errata 01, Public Review Draft 01," ending 2008-05-08. The UBL 2.0 Update Package provides UBL 2.0 users with an upgrade to the December 2006 UBL 2.0 release.


UBL Features


  • Royalty-free library of standard XML electronic business documents.
  • Designed in an open and accountable standards process.
  • Plugs directly into existing business, legal, auditing, and records management practices with minimum disruption.
  • International effort, not specific to just one country or industry.
  • Eliminates re-keying of data in existing fax- and paper-based supply chains.
  • Maintains close alignment with existing EDI systems.
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History of UBL

In 2001, within OASIS, Jon Bosak, one of the inventors of XML markup language proposed the creation of a technical committee with the objective of creating a first set of business documents based on the CCTS (ISO 15000 part 5) to facilitate electronic business adoption tasks by companies and public administrations. This technical committee was called Universal Business Language.

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About the OASIS UBL Technical Committee

UBL TC stands for Universal Business Language Technical Committee.

The aims of the UBL TC are the following:

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Mail lists

The following UBL mailing lists are hosted by OASIS:

This list is used by OASIS UBL Technical Committee members to conduct their work. TC membership is required to post. TC members are automatically subscribed; the public may view archives.

This is a public mail list for providing input to the OASIS UBL Technical Committee members. Send a comment or view archives.

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Why use UBL

There are different reasons that, without entering in specific comparisons, are key in favor of using UBL instead of other XML vocabularies for the electronic business document preparation.


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UBL specifications

UBL 2.1 Standard (November 2013)


A library of over 2,000 XML components together with 65 business document schemas.

Online hub document: http://docs.oasis-open.org/ubl/os-UBL-2.1/UBL-2.1.html

Offline package (with schemas): http://docs.oasis-open.org/ubl/os-UBL-2.1/UBL-2.1.zip

UBL 2.1 Abstract Syntax Notation 1 (ASN.1) Alternative Representation Version 1.0

UBL 2.1 Unified Modeling Language (UML) Alternative Representation Version 1.0

Video guides to navigating the UBL 2.1 specifications.

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About UBL

UBL, the Universal Business Language, is the product of an international effort to define a royalty-free library of standard electronic XML business documents such as purchase orders and invoices.

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Online OIOUBL Dokumentation

Danish implementation of UBL customization for support of the basic procurement process. You can find all documentation in English and Danish. OIOUBL has been developed in coordination with the "North European Subset" (NES), as an initiative where the involved countries work together on content and use of the electronic business documents based on the UBL 2.0 standard.

The site immediately presents online hyperlinked documentation for the structure and purpose of all the elements in CommonLibrary and each of the 15 (used) UBL business documents.

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