This setting enables statement creation for invoices without line items. It allows you to designate a service to use on invoices without line items. This service is added as a zero amount line item for each plan associated with the invoice. The service must not have a rate schedule associated with it.
Aria uses the line item(s) in an invoice to generate statements. In some cases, a statement is needed even if the invoice does not have a line item. For example, a client may want to send a statement for an account with usage, though no usage occurred in the billing period.