Settings → Settings → SalesIn the "Edisoft email address" field, enter the email address you received from Edisoft. Invoices will be sent to the Edisoft system at this address.In the "Peppol item priority code" field, choose which item identifier to prioritize:If "Item code" is selected, it will assign the item code, and if it is missing, it will assign the item barcode.If "Barcode" is selected, it will assign the item barcode, and if it is missing, it will assign the item code.Warehouse → SalesSelect the invoice you want to send to Edisoft.In the sales document, click "Other actions" → "Send to Edisoft xml".Once the invoice is successfully sent, a confirmation message "Letter successfully sent" will appear in the bottom-right corner of the screen.