https://openbusinesserp.com/de/deNeue Ratgeber und Versionen von OpenBusinessERP.https://openbusinesserp.com/de/ratgeber/e-rechnung-pflicht/https://openbusinesserp.com/de/ratgeber/e-rechnung-pflicht/Wed, 04 Nov 2026 08:00:00 GMTEmpfang seit 1.1.2025, Versand ab 2027/2028: Fristen der E-Rechnungspflicht, XRechnung oder ZUGFeRD und was OpenBusinessERP heute unterstützt.https://openbusinesserp.com/de/ratgeber/datev-export-steuerberater/https://openbusinesserp.com/de/ratgeber/datev-export-steuerberater/Wed, 04 Nov 2026 08:00:00 GMTWas der DATEV-Export (EXTF) und die SAF-T-Datei aus OpenBusinessERP enthalten, was Ihre Kanzlei bekommt und wo die Grenzen liegen.https://openbusinesserp.com/de/ratgeber/gobd-kleine-unternehmen/https://openbusinesserp.com/de/ratgeber/gobd-kleine-unternehmen/Wed, 04 Nov 2026 08:00:00 GMTUnveränderbar, nachvollziehbar, 8 bzw. 10 Jahre aufbewahrt: was die GoBD von kleinen Firmen erwarten, was eine Verfahrensdokumentation ist und was Software leisten kann und was nicht.https://openbusinesserp.com/de/ratgeber/kleinunternehmerregelung/https://openbusinesserp.com/de/ratgeber/kleinunternehmerregelung/Wed, 04 Nov 2026 08:00:00 GMTDie Grenzen 25.000 € und 100.000 €, was auf die Rechnung gehört und wie OpenBusinessERP einen umsatzsteuerbefreiten Kleinunternehmer einrichtet.https://openbusinesserp.com/de/ratgeber/qr-rechnung-schweiz/https://openbusinesserp.com/de/ratgeber/qr-rechnung-schweiz/Wed, 04 Nov 2026 08:00:00 GMTDie QR-Rechnung hat im Oktober 2022 die orangen und roten Einzahlungsscheine abgelöst. QR-IBAN mit QR-Referenz, SCOR oder ohne Referenz, und was der Zahlteil in OpenBusinessERP kann und noch nicht kann.https://openbusinesserp.com/de/ratgeber/pflichtangaben-rechnung/https://openbusinesserp.com/de/ratgeber/pflichtangaben-rechnung/Mon, 02 Nov 2026 08:00:00 GMTAlle Pflichtangaben nach § 14 Abs. 4 UStG, Kleinbetragsrechnung bis 250 € und Kleinunternehmer-Hinweis, mit dem Feld in OpenBusinessERP.https://openbusinesserp.com/de/ratgeber/umstieg-von-excel/https://openbusinesserp.com/de/ratgeber/umstieg-von-excel/Mon, 02 Nov 2026 08:00:00 GMTKunden, Lieferanten, Artikel, Eröffnungssalden und offene Posten per CSV/XLSX-Import übernehmen. Mit Vorlagen zum Herunterladen.https://openbusinesserp.com/de/changelog/#v18-1-0https://openbusinesserp.com/de/changelog/#v18-1-0Mon, 28 Sep 2026 08:00:00 GMTIn-app updates are now off by default. The Apply update button runs pip install --upgrade inside the environment the server runs from, so it is now switched off unless you set ALLOW_RUNTIME_UPGRADE=true in the server's environment and restart.https://openbusinesserp.com/de/changelog/#v18-0-0https://openbusinesserp.com/de/changelog/#v18-0-0Thu, 24 Sep 2026 08:00:00 GMTThe macOS installer is for Apple Silicon only. Both macOS files on the release page are built for it and nothing is published for Intel Macs; the download badge and the install guide now say so and point an Intel Mac owner at pip or Docker.https://openbusinesserp.com/de/changelog/#v17-5-0https://openbusinesserp.com/de/changelog/#v17-5-0Sat, 12 Sep 2026 08:00:00 GMTThe Windows installer now offers to continue when the old uninstaller fails instead of aborting, so a machine whose previous uninstaller hangs can still complete an upgrade.https://openbusinesserp.com/de/changelog/#v17-4-1https://openbusinesserp.com/de/changelog/#v17-4-1Fri, 11 Sep 2026 08:00:00 GMTApproving an invoice was writing "sent" instead of "approved", which blocked the Mark Paid button because it required the approved status. The service, the router description, the audit log and both test suites are corrected.https://openbusinesserp.com/de/changelog/#v17-4-0https://openbusinesserp.com/de/changelog/#v17-4-0Thu, 10 Sep 2026 08:00:00 GMTThe Windows desktop upgrade no longer freezes when a legacy uninstaller is still on disk. The old installer used ExecWait to run the previous uninstaller, which opened a visible window and waited for the user to interact with it before continuing, so a silent upgrade hung indefinitely; it now runs under nsExec with a five-minute timeout and no window.https://openbusinesserp.com/de/changelog/#v17-2-0https://openbusinesserp.com/de/changelog/#v17-2-0Wed, 09 Sep 2026 08:00:00 GMTThe macOS desktop build asked the system for a protection it had no identity to satisfy. Bundled PostgreSQL would not initialise, and the loader said a library and the process loading it have different team identifiers on a machine where neither carries one, which is library validation rather than the quarantine everybody reaches for first.https://openbusinesserp.com/de/changelog/#v17-1-0https://openbusinesserp.com/de/changelog/#v17-1-0Wed, 09 Sep 2026 08:00:00 GMTA printed invoice ignored the country it was going to. Post code before city is right for the German speaking countries and wrong for every party in the Australian, New Zealand, British, Indian and North American profiles we ship, and the formatter returns lines rather than fields now, since field order alone cannot say which parts share a line.https://openbusinesserp.com/de/changelog/#v16-8-2https://openbusinesserp.com/de/changelog/#v16-8-2Sat, 05 Sep 2026 08:00:00 GMTAnd 16.8.1 shipped with no desktop installers at all, which is fixed here in the machinery rather than in the product. The check that opens the built application ran all three of its legs against one port while the Windows helper process survives every stop signal available to it, so one process that would not die failed the whole job and took the four installers with it.https://openbusinesserp.com/de/changelog/#v16-8-1https://openbusinesserp.com/de/changelog/#v16-8-1Sat, 05 Sep 2026 08:00:00 GMTA patch release, and most of it is money. An invoice total was written for a reader and then read back as a number, so from a thousand upwards the field came up empty and nine thousand left the browser as nine, while a reader whose decimal mark is a comma lost the cents off every invoice at any size. A first boot told the user to add by hand what the seeder was about to write. The two seed reconcilers run from the data repair registry, which the application calls well before the seeder, so on a fresh data directory they met an empty table, read it as a database whose seed cannot be dated, and warned that the tax rates and the working calendars had to be entered manually.