FAQ
Which Lexware Office plan do I need? The Public API has to be available in your plan. The connection test shows whether your key is accepted. XRechnung and invoices in English need the extended invoicing features of Lexware Office (the Connection page lists the business features of your account).
Is there a sandbox? No. Lexware Office offers a free trial account with all features; use its API key as the test key.
Can the add-on book payments in Lexware Office?
No. The Public API only reads payments (GET /v1/payments/{id}). The add-on reads them back; you book incoming payments in Lexware Office.
Why does an invoice need to be finalized? Only a finalized invoice has a number, a PDF and can be credited. The Public API cannot finalize a draft later. With “Finalize the invoice” off you get drafts that you finalize in Lexware Office; the add-on then shows them as drafts.
Can an invoice be changed or deleted by the add-on? No. A finalized invoice cannot be changed through the API. If an order changes after the invoice, create a credit note and a new invoice in Lexware Office.
Does a refund pay the customer back? The credit note is the accounting document. The money goes back through your payment provider or by bank transfer.
What if the connection breaks while the invoice is created? The add-on writes a pending document row first. The next attempt searches the Lexware Office voucher list (same total, same contact or name, created since the attempt) and adopts the invoice it finds; it never creates a second one. If two invoices could be the one, the job stops and asks you to decide.
Does it work with several currencies? The Lexware Office API supports euro only. The store’s primary currency must be EUR.
Does it send e-mails to customers? No. The invoice is available as a download on the customer’s order page. Sending invoices by e-mail is done in Lexware Office.
What does the customer see? A button “Download invoice (PDF)” on the order page when signed in. Guests and other customers cannot download it.
Does it work with Multi-Vendor? Yes. Owner mode: one account for the marketplace. Otherwise each vendor connects their own account. Vendors only act on their own orders.
Where is the API key stored? Encrypted with AES-256-GCM in the database; it is never shown again and never written to the log.
Lexware Office is a trademark of its owner; this add-on is not affiliated with or endorsed by Lexware Office.
My license shows “Pending verification”
Section titled “My license shows “Pending verification””This status appears in older add-on versions when you use a CS-Cart Marketplace license number that our license server has not matched with the Marketplace yet. The add-on is fully working in this state: no feature is switched off and you do not need to do anything. Newer versions show it as Active (Marketplace license). We confirm Marketplace numbers on our side; click Check now on the add-on’s License tab (Add-ons → Manage add-ons → the add-on) a little later and it shows Active. If it has not changed after 24 hours, contact support with your Marketplace order number.
Still stuck?
Section titled “Still stuck?”Work through the troubleshooting guide, then contact support with your CS-Cart version, edition, PHP version and the add-on version (1.0.0).