In NAV, we used to have a button called “Reverse Lines” when you create a Purchase Credit Memo. This allowed a user to select multiple lines on different Purchase Invoices and create the Purchase Credit Memo. But now in Dynamics 365 BC, that button is completely gone and you can’t create a Credit Memo for multiple invoices unless you manually type in the quantities you want to reverse. Please bring back the 'Reverse Lines' button.