Hub · Updated May 2026
Markdown exportReview validation help
Non-technical explanations for the most common errors and warnings shown during invoice review.
Articles
Missing required invoice information
Required seller, buyer, invoice, currency, and line data.
Buyer reference and Leitweg-ID problems
Routing references for German public-sector XRechnung invoices.
Payment and IBAN problems
Payment instructions, IBAN format, and bank transfer requirements.
VAT, reverse charge, and tax category problems
Tax category, exemption, VAT ID, and reverse charge checks.
Totals, rounding, and line amount mismatches
How validators recalculate totals and why amounts may fail.
Prepayments and previously paid amounts
Deposits, advance payments, and amount-due calculations.
Line item and unit code problems
Line descriptions, quantities, unit codes, prices, and service periods.
ZUGFeRD and Factur-X PDF warnings
Hybrid PDF/XML review, stale validation, and source PDF readiness.