E-invoice validation rulesLook up a code from your validation report and see which invoice information the rule checks.Rule categoriesXRechnung84 rulesEN 16931243 rulesUBL759 rulesCII588 rulesPeppol0 rulesRule versionsValidation rule versionsBusiness termsFormats and guidesOpen and validate XRechnungIdentify a ZUGFeRD invoiceRead and validate Factur-XUnderstand Peppol invoicesZUGFeRD profiles explainedGermany’s e-invoicing mandateE-invoicing for German small businessesKeeping e-invoices in GermanyWhat to do when an e-invoice is rejectedValidate a file