If Incorrect items are added in the invoice and it has to be removed then you also remove items even after invoice is created. this is done by following below process
Business Profile > Sales > Sales Order New > Invoice Selection > Edit Invoice > Delete
Go to the List of Invoices
All the invoices of the selected filters will be opened to you. Select the invoice from which you want to delete items
Click on “Edit Item” button to edit the created invoice and click on Item which is to be deleted and its details will be opened to you
Click on “Delete Item” button on the top-right corner of the screen this will delete the selected item
You will be taken to Invoice detail page where you can see that your item is deleted
Similarly, you can delete the unwanted items from the list