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.

In order to receive email notifications of posts to this site, please click top-right on your username next to "Logged in as:", or bottom-right "My account", in order to get to your account page. Go to the "Subscriptions" tab and you'll see 5 different sub-areas. The "categories" and "content types" sub-areas have a number of check-boxes. Click on any or all and then save your selection in order to receive an email notification of a new post in that area of this web site.


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.
  • Read more

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.

Read more

About the OASIS UBL Technical Committee

UBL TC stands for Universal Business Language Technical Committee.

The aims of the UBL TC are the following:

Read more

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.

Read more

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.


Read more

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.

Read more

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.

Read more

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.

Northern European Subset

NES is a cooperation among several European countries: Denmark, Norway, Sweden, UK, Finland and Iceland. The initiative comprises representation from both government and industry.

The site provides a set of specifications, that shows how the participating countries plan to apply UBL.

NES Version 2 contains a set profiles, guidelines, code lists (most useful for European countries) and validation tools.

ebXML and UBL

The ebXML suite of specifications, many of them now standardized as ISO 15000, provides a complete XML-based infrastructure that enables EDI functionality over the free Internet. UBL provides a standard data format for the messages to be exchanged in such an infrastructure; however, UBL is designed to be agnostic with respect to the infrastructure, and UBL messages can be used in a very wide range of functional contexts, from complex service-oriented architectures (SOAs) to the simple exchange of documents via email.

Read more

XML.org Focus Areas: BPEL | DITA | ebXML | IDtrust | OpenDocument | SAML | UBL | UDDI
OASIS sites: OASIS | Cover Pages | XML.org | AMQP | CGM Open | eGov | Emergency | IDtrust | LegalXML | Open CSA | OSLC | WS-I