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https://invoice-api.xhub.io/en/glossary/steuernummer 2026-08-26 https://invoice-api.xhub.io/en/glossary/leistungszeitraum 2026-08-26 https://invoice-api.xhub.io/en/glossary/rechnungsnummer 2026-08-26 https://invoice-api.xhub.io/en/glossary/skonto 2026-08-26 https://invoice-api.xhub.io/en/glossary/digitale-signatur 2026-08-26 https://invoice-api.xhub.io/en/glossary/e-rechnungspflicht 2026-08-26 https://invoice-api.xhub.io/en/glossary/e-rechnung 2026-08-26 https://invoice-api.xhub.io/en/glossary/vida 2026-08-26 https://invoice-api.xhub.io/en/glossary/gobd 2026-08-26 https://invoice-api.xhub.io/en/glossary/revisionssicherheit 2026-08-26 https://invoice-api.xhub.io/en/glossary/aufbewahrungspflicht 2026-08-26 https://invoice-api.xhub.io/en/glossary/ustg-14 2026-08-26 https://invoice-api.xhub.io/en/glossary/kleinunternehmer 2026-08-26 https://invoice-api.xhub.io/en/glossary/b2g 2026-08-26 https://invoice-api.xhub.io/en/glossary/b2b 2026-08-26 https://invoice-api.xhub.io/en/glossary/xrechnung-vs-zugferd 2026-08-26 https://invoice-api.xhub.io/en/glossary/cii-vs-ubl 2026-08-26 https://invoice-api.xhub.io/en/glossary/zugferd-profile 2026-08-26 https://invoice-api.xhub.io/en/glossary/zugferd-vs-factur-x 2026-08-26 https://invoice-api.xhub.io/en/glossary/xrechnung-fehler-beheben 2026-08-26 https://invoice-api.xhub.io/en/glossary/e-rechnung-empfangen 2026-08-26