The Service Price Adjustment Group table contains information about the groups that you have set up to make price adjustments for service items (for example, parts for price adjustment on spare parts, labor for price adjustment on resource hours, freight for price adjustment on freight, and so on).For each service price adjustment group, you can select whether the price adjustment is for basic or extra service invoice lines, or whether the price adjustment is on the total service. If the price adjustment is on basic or extra service invoice lines, you need to specify which service invoice lines are adjusted for the group in the Serv. Inv. Line Price Adjmt. window. For each service price adjustment group, you also need to specify the type and number of the adjustment line that is inserted as a service invoice line to adjust the service pricing. The adjustment invoice line amount will be posted to this number.