Detailed Scheduling Heuristics in APO

DS heuristic – Heuristic for detailed scheduling (DS). For example, DS heuristics are used to specify the processing sequence of operations for a resource.
Detailed Scheduling Heuristics in APO can only reschedule or deallocate orders and operations that start within the planning period.
The system must schedule deallocated operations or orders to be newly created so that the start date is within the planning period.
• Reschedule activity is used to determine a new date or new resources for a scheduled operation, on which the operation should be processed.
With rescheduling, the operation still occupies the resources; after rescheduling it occupies either the previous resources or the new resources. Rescheduling an order means rescheduling the operations of an order.
• Deallocate activity in which an operation is removed from the resource schedule. With deallocation, an operation is given the status deallocated; the operation no longer occupies any resources.
• Schedule activity for newly created or deallocated operations, which is used to:

- determine the resources to be used to process an operation- determine the date when the operation should be processed on the resource

With scheduling, the operation occupies the resource. Scheduling an order means scheduling all the operations of an order.