Knox Documentation

Fortnox invoicing for Craft Commerce

Installation

Requirements, connecting to Fortnox, and the two settings to check before your first invoice.

Why a Fortnox invoice stops matching what the customer paid, and the four things Knox does about it.

How Knox resolves Swedish VAT per order, which account each sale books to, and the two things it deliberately will not do.

When invoices are created, what the control panel shows, payments and credits, the console, and the Twig API.

What each Fortnox error actually means, and what to do about the states Knox can leave an invoice in.

The questions worth answering before you install it.