This field contains the method that you want the program to use for calculating the default contract value of service items when they are created. There are three options: None, Based on Unit Price, and Based on Unit Cost.
None — the program does not calculate a default value.
Based on Unit Price — the program uses this formula: Value = Sales Unit Price * Contract Value % / 100.
Based on Unit Cost — the program uses this formula: Value = Sales Unit Cost * Contract Value % / 100.