Summary
- UBL 2.5 is an OASIS Committee Specification that defines a comprehensive set of XML schemas for common business documents (e.g. invoices, credit notes, orders, despatch advice), designed to support interoperable B2B and B2G e‑procurement and invoicing.
- The release extends and modernises existing UBL document models, improving alignment with current regulatory, trade, and digital reporting needs, while maintaining backward compatibility with earlier UBL versions where possible.
- UBL 2.5 serves as a foundational standard for many national and regional e‑invoicing frameworks (including those aligned with EN 16931 and PEPPOL), enabling consistent data exchange across systems, industries, and borders.
Source docs.oasis-open.org
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