You may get an error "An error has occurred when sending e-invoices. Not all invoices were sent" when you are trying to send E-invoices in Exact Multivers Online. As a workaround you can close and reopen the administration and click step 5 in the menu for registering E-invoice accounts. You may have to repeat this step when the error reoccurs. We are investigating the issue. Our apologies for the inconvenience."