Scheduling Elements for Networks, Plant Maintenance Orders and Process Orders 

The activities/operations of networks, maintenance orders and process orders are not divided into segments, as in planned orders and production orders.

You must explicitly maintain relationships for networks and process orders (see the figure below). For maintenance orders you can also explicitly maintain the relationships. They can also be automatically generated by the system in planned orders and production orders.

The system generates the relationships for maintenance orders, as for planned/production orders.