When adding a new line to an already invoiced sales order the system throws two identical warning questions "The sales order has been fully invoiced. Do you want to modify it?". The first time the question is triggered when a new line is added on the order. Then when the user saves the order, the same question is triggered again. The second question is obsolete, as the user has already confirmed that the status "Invoiced" is acknowledged and they still want to modify the order.

In processes where the sales orders are used multiple times even after invoiced, this hinders the usability. One confirmation should be enough here to acknowledge that the user is aware of the order status.