Installation

Requirements

Craft CMS 5.3 or later
Craft Commerce 5.0 or later
PHP 8.2 or later
A Visma developer client — a client_id and client_secret. Sandbox registration is self-service at the Visma developer portal.

Install

composer require justinholtweb/craft-vismaz
php craft plugin/install vismaz

Or find Vismaz in the Craft Plugin Store and install it from there.

Nothing is sent until you say so

Installing Vismaz changes nothing about your orders. Automatic sending is off by default, and until you connect a Visma company there is nothing to send to. You can install it, connect a sandbox company, and look at exactly what would be posted before anything touches real books.

Register the redirect URI

Vismaz's settings screen shows a Redirect URI. Register it on your Visma app exactly, character for character — including the scheme and any port. Visma rejects a mismatched redirect before your browser ever reaches a sign-in screen, and the error it gives does not say which part disagreed.

Connect

Go to Settings → Plugins → Vismaz.
Choose Sandbox or Production. These are entirely separate hosts, credentials and companies, and Vismaz keeps a connection for each — so moving between them loses neither.
Paste the Client ID and Client secret. Both accept environment variables, and on a real site they should be environment variables.
Save, then press Connect to Visma and pick the company.

Vismaz always asks Visma which company to use rather than accepting the last one you signed into. A merchant with a trading company and a holding company under the same login would otherwise connect the wrong books without any visible sign of it.

Check it before you trust it

Press Test connection. It names the company it reached, which is the only confirmation worth having.

Then open any completed order and press Preview in the Vismaz panel. That runs the same builder the real send runs, with remote lookups switched off, so it creates nothing in Visma and shows you the exact payload that would be posted.

Which mode to choose

	Invoice mode	Voucher mode
What Visma receives	One customer invoice per order	One journal entry per period
Suits	B2B, low volume, customers who need statements	Consumer shops with real volume
Visma reminders and statements	Work as normal	Not applicable
Customer ledger	One entry per buyer	Untouched

A busy consumer shop wants voucher mode. Nine hundred orders a day become one verification with a handful of postings, instead of nine hundred invoices in a customer ledger that will never be looked at.

Before you send anything real

Check the ledger accounts against the merchant's own chart of accounts. Vismaz ships BAS defaults that are right for most Swedish shops, but "most" is not "yours", and a wrong account number does not fail loudly — it quietly misfiles revenue until someone reconciles the year.

See Configuration for what each account does.