Use this tab to define invoice rules that will be applicable to the services in the service quotation work orders and work tasks. Invoice rules are used to manipulate sales price with revenue percent or to define sales prices based on costs. You can specify if the rule should be applied to sales groups or cost types and also if sales lines with zero invoice amounts should be included in or excluded from the customer invoice. Additionally, invoice rules can be used to accumulate sales prices to a planning line of work order invoice type Fixed Price on a work task created from quotation acceptance process and also to define rounding of Quantity to Invoice in work tasks in the service quotation.