Lead Time Constraints

Lead time constraints determine how soon new material can be made available. Within the lead time, only on-hand inventory and scheduled receipts are used to satisfy demands. Beyond the lead time or planning time fence, you can create planned orders.

The quantity of these planned orders is constrained by the available supplier capacity. The planning process honors lead times, and orders can be fulfilled late to respect lead time constraints.

Purchase orders within the planning time fence or lead time can only be rescheduled out, but not rescheduled in. If a purchase order is outside of the planning time fence or lead time, then the purchase order can be rescheduled out. Also, the purchase order can be rescheduled in only until the planning time fence or lead time.