- Fixed XRechnung URLs to use correct filenames (XRechnung-UBL-validation.sch) - Removed non-existent PEPPOL-T10 and PEPPOL-T14 files - Added PEPPOL-EN16931-CII validation file - All 7 validation files now download successfully: - 3 EN16931 files (UBL, CII, EDIFACT) - 2 PEPPOL files (UBL, CII) - 2 XRechnung files (UBL, CII)