It so happened that I have uploaded multiple invoices via import invoice option & entered payments for each of them. Missed to specify the Item type as service and its now configured as goods instead of service.
Chagned the item type to service in the Items but that did not change anything in the invoices uploaded earlier. Now don't want to edit each envoice individually as he total is above 300.
How to rectify the same. It's for only one type of item and that too for only one vendor invoice.
Please help...