Prerequisites: User is connected to a Callcenter and Enable order completion is set to "No".

If a sales order, with mode of delivery set to "Pick up in store", is packing slip updated, it is still possible to open in and be paid in the POS. In my opinion this should not be possible because the sales order is already "paid", and the next step is to invoice the sales order. At least, there should be a parameter selecting if packing slip updated sales orders/ lines should be able to be opened and paid in the POS.