When should both the Root Work Order and Root Work Order Line Item fields be...

When a service process dictates that there are two levels in a Work Order Hierarchy and two levels in the Work Order Line Hierarchy. (Parent Work Order can be used)

When a service process dictates that there is a single level in a Work Order Hierarchy and more than two levels in the Work Order Line Hierarchy.

When a service process dictates that there are more than two levels in a Work Order Hierarchy and more than two levels in the Work Order Line Hierarchy.

When a service process dictates that there are more than two levels in a Work Order Hierarchy and more than a single level in the Work Order Line Hierarchy.