What to do if you see the message "No accounting year exists for the specified accounting date" (Swedish: Inget bokföringsår existerar för angivet bokföringsdatum)

The cause:

One or more Pleo expenses are from a date without an accounting year in Fortnox.

The solution:

Please go to Fortnox and check the available accounting years. If there's no year that matches the date of the expense (for example, if it's January and a new accounting year has not been created yet), then please create a new year by clicking on "Skapa nytt...":