Connecting Lexware Office
This translation was created with AI and has not been reviewed yet.
You can connect Flowira to Lexware Office. Your invoices and cancellation invoices then arrive in Lexware as vouchers automatically, with nothing to retype or upload. You find the setting under Settings → Integrations → "Lexware Office".
What do I need?
You need the Lexware Office XL plan, because the Public API is only part of XL. You also need to create an API key in Lexware Office.
How do I connect Lexware Office?
- In Lexware Office, open Settings → Extensions → Public API and create a new key. It needs access to vouchers, files, profile and booking categories.
- Copy the key.
- In Flowira, open Settings → Integrations → "Lexware Office", paste the key into "API-Schlüssel" and click "Verbinden".
- Under "Kategorie für Umsätze", choose the booking category your income should be posted to. Without it, Flowira transfers nothing.
What is transferred?
As soon as an invoice is issued, Flowira sends it to Lexware automatically:
- invoices and cancellation invoices (stornos), each with its PDF, as vouchers,
- the Flowira subscription invoice as a document.
Voucher sales (gift vouchers), Stripe fees and payments are not transferred. Flowira does not reconcile payments, so matching payments to vouchers stays in Lexware.
Invoices issued before you connected are not sent automatically. You can catch them up (see below).
What do I see on the page?
Three counters show how many documents are transferred, in progress or failed. A failed transfer has a "Erneut versuchen" button next to it. Click it once you have fixed the cause.
How do I send a past month again?
Under "Monat nachträglich übertragen" you pick the current month or one of the 11 months before it. Flowira transfers all invoices and cancellation invoices of that month. Anything already in Lexware is skipped, so nothing is duplicated.
What about the small business rule?
If Lexware and Flowira disagree on the small business rule (§ 19 UStG), the page shows a notice. Flowira still sends the amounts exactly as they appear on the invoice. Check which setting is right and align the other one.
What if Lexware rejects the key?
Transfers pause. Create a new key in Lexware and save it in Flowira, then transfers continue.
How do I disconnect?
Click "Trennen". Flowira deletes the stored key and stops transferring. Vouchers that are already in Lexware stay there.
What about privacy?
Lexware receives customer data only inside the invoice PDF. Your studio chooses Lexware Office itself, so Lexware is your recipient and not a sub-processor of Flowira. You need your own data processing agreement with Lexware.