About Peppol / XML Validator

Tool to validate Peppol UBL-documents.

This validator was primarily created as a development tool for validating UBL files. This was due to mandatory e-invoicing for B2B, which was introduced in Belgium on January 1, 2026. The focus was on EN16931 and Belgian e-documents.

Documents submitted to the validation service are processed solely for validation purposes and improving the software. The service is provided as is, without warranties of any kind. We do not accept responsibility for any incorrect or inconsistent validation results.

This validator is built on the open-source XRouter project and has been extended to add extra functionality. XRouter is originally released under the MIT License. Thanks to Bohumír Zámečník.
XPath2.Net is being used for XPath2 handling. XPath2.Net is originally released under MS-PL license. Thanks to Stef Heyenrath.
Kyktir is a free universal file viewer application. Kyktir UBL Viewer is built by Winking.