The billing process for service invoices is very cumbersome and time assuming, and involves both the processing of a sale order and despatch of good process before an invoice can be generated. This is inappropriate for service business based business and the system should have the functionality to directly generate an invoice, as is possible in SAGE line 50
It is possible to add free text items to an invoice in the Invoicing module. This allows an invoice to be generated outside of the Sales Order module.