EU: Open-Source Visualizer Released for EN 16931 E-Invoices, Supporting Both 2017 and 2026 Editions
On 26 October 2026, the initial version (0.5.0) of phlox, an open-source visualization tool for EN 16931 electronic invoices, was released.
The tool reads invoices in UBL or CII syntax, converts them into a syntax-neutral intermediate model and renders them as HTML, PDF or plain text, in English or German.
Supported standard editions:
- EN 16931:2017 (UBL 2.1, CII D16B)
- EN 16931:2026 (UBL 2.5, CII D25A)
The edition is detected from BT-24 (Specification identifier) or can be set explicitly. The tool only visualizes invoices and does not validate them against business rules. It is published under the Apache License 2.0 and requires Java 17 or later.
For ERP invoice workflows, explore SAP e-invoicing integration.
Explore the phlox open-source EN 16931 invoice visualizer on GitHub for the source code and project documentation.
EU: Open-Source Visualizer Released for EN 16931 E-Invoices, Supporting Both 2017 and 2026 Editions
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