OASIS members and other interested parties,
OASIS and the UBL TC are pleased to announce that UBL v2.5 CSD01 is now available for public review and comment.
The UBL TC facilitates interoperability in business data exchange by defining a semantic library and syntax bindings of business documents.
The documents and all related files are available here:
Universal Business Language Version 2.5
Committee Specification Draft 01
20 August 2025
XML: https://docs.oasis-open.org/ubl/csd01-UBL-2.5/UBL-2.5.xml (Authoritative)
HTML: https://docs.oasis-open.org/ubl/csd01-UBL-2.5/UBL-2.5.html
PDF: https://docs.oasis-open.org/ubl/csd01-UBL-2.5/UBL-2.5.pdf
Additional Artifacts
Code lists for constraint validation:
Context/value Association files for constraint validation:
Document models of information bundles:
Default validation test environment:
XML examples:
Annotated XSD schemas:
Runtime XSD schemas:
Endorsed XSD schemas for forward validation:
The ZIP containing the complete files of this release is found in the directory:
How to Provide Feedback
OASIS and the UBL TC value your feedback. We solicit input from developers, users and others, whether OASIS members or not, for the sake of improving the interoperability and quality of its technical work.
The public review is now open and ends September 28, 2025 at 23:59 UTC.
Comments may be submitted to the project by any person through the use of the project's Comment Facility located here.
Please note, you must log in or create a free account to see the material. Please contact the TC Administrator (tc-admin@oasis-open.org) if you have any questions regarding how to submit a comment.
All comments submitted to OASIS are subject to the OASIS Feedback License, which ensures that the feedback you provide carries the same obligations at least as the obligations of the TC members. In connection with this public review, we call your attention to the OASIS IPR Policy applicable especially to the work of this technical committee. All members of the TC should be familiar with this document, which may create obligations regarding the disclosure and availability of a member's patent, copyright, trademark and license rights that read on an approved OASIS specification.
OASIS invites any persons who know of any such claims to disclose these if they may be essential to the implementation of the above specification, so that notice of them may be posted to the notice page for this TC's work.
Additional information about the specification and the UBL TC can be found at the TC's public homepage located here.