Manufactured Items

Manufactured items are planned differently depending on whether the item has a routing and whether the Planning Mode is Infinite APS or APS:

Does item have a routing?	Infinite APS Behavior	APS Behavior
Yes	Infinite APS pull plans the operations through the item’s routing, starting with the end item’s last operation. It determines the operation start dates by summing the Move, Queue, Setup, Run, and Finish times defined for the operations and assumes infinite resource capacity. After pull-planning the item through its routing, Infinite APS pull-plans the item’s components. The setting of the Plan Materials at Operation Start field determines how the system sets the need date of a component requirement; if the parameter is selected, the need date of a component is the start date of the operation in which it is needed. If the parameter is cleared, the need date is the start date of the job.	APS plans the operations in the same manner as Infinite APS in almost all respects. The difference is that APS considers the finite availability of your resources. APS checks several combinations of resources to find the fastest combination. The Pull Iterations planning parameter determines how many combinations to check. This planning method is much more realistic in that the system does not over-promise an order during a period when there are actually no available resources to complete the order.
No	Infinite APS calculates the lead time for the end item. To determine the start date, Infinite APS plans backward, starting at the due date, to the lead time value. Resources have infinite capacity.	No difference from Infinite APS. When APS plans an item that does not have a routing, the item is treated as if the MRP Item option (on the Items record) has been selected for that item.