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.

Committee-published supporting materials

These are resources published by the UBL Technical Committee in support of working with UBL artefacts.

XPath files

These files enumerate all element and attribute information items described by the UBL 2 schemas.

UBL Maintenance Governance Procedures

This Committee Note describes the governance of the process to propose, accept and incorporate changes to the OASIS Universal Business Language (UBL) 2 specifications.

Read more

Converted from the former support page for UBL 2.0

These resources were submitted as part of the original UBL 2.0 support page:


UBL Northern European Subset

Read more

UN/ECE Recommendation No. 31: Electronic Commerce Agreement

The Electronic Commerce Agreement is intended to serve the commercial requirements of business-to-business electronic commerce partners. It contains a basic set of provisions which can ensure that one or more electronic commercial transactions may subsequently be concluded by commercial partners within a sound legal framework.

Model UBL Letter Agreement and Commentary

The Model UBL Letter Agreement provides a template for contracts between trading partners who wish to treat particular UBL electronic documents as equivalent to their paper counterparts. The Model does not itself constitute a contract and should not be used without legal review, but together with the Commentary it provides a starting point for lawyers and a checklist for discussion with their clients.

Do you need tools to support document interoperability?

Data interoperability remains an important problem in the industry today which is handled by the mapping experts and data consultants who understand the semantic meaning of each entity in a specific interface and define the mappings among different document artifacts, usually as XSLT rules.

In order to facilitate this costly and tedious process, the OASIS SET TC
has been established.

UBL 2.0 International Data Dictionary for Public Review until January 6th 2009

The OASIS Universal Business Language (UBL) TC has recently approved the UBL 2.0 International Data Dictionary as a Committee Draft and approved the package for public review: The public review started 7 November 2008, and ends 6 January 2008. There is an open invitation to comment and feedback from potential users, developers and others, whether OASIS members or not,

Prototype eInvoicing and eOrdering project in Europe

The European Commission IDABC eInvoicing and eOrdering project team has recently reached an important milestone: the delivery of the prototype. It allows the sending of an XML invoice to the Commission's e-PRIOR system and the automatic integration in the back-office system after a number of validations. The major next step is a real-life pilot with a number of IT suppliers.

Public review begins for UBL Guidelines for Customization 1.0

The Universal Business Language (UBL) Guidelines for Customization Version 1.0 provides practical information for creating UBL-conformant and UBL-compatible document schemas.

Latest UBLish v2.0.alpha Powers Your Spreadsheet With Direct UBL Generation

2008 Oct 06

UBLish v2.0.alpha (20081006) is now available for early download!

This version primarily delivers the new functionality of converting fancy spreadsheet designed with user input data directly into XML-instances such as UBL or other document formats. 

UBLish v2.0.alpha Availble - Now You Can!

  2008 Sep 22

UBLish v2.0.alpha is now available for early download! If you like what XML-Spreadsheets for UBL 2.0 and UBL v1.0 IDD draft could do for you, now you can generate them, as well as any Excel spreadsheet content, directly by yourself!
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