I wrote an article about document validation on the #peppol network: https://ionite.net/news-articles/2023-08-17_validating_peppol_documents/

After 10 great years at SIDN, it's time for another challenge. As of today, I will be working full-time for my own company Ionite, on the standardization of #eInvoicing and #eProcurement, and the #peppol network. Let's get rid of paper and pdf!