Items - Time Fence Rule

Select a rule to control when demands for this item can use available supplies or inventory. This control allows you to preserve a quantity for use by shorter-term demands. Demands due later than the time fence cannot consume available inventory and supplies to the point where the on-hand and supply quantities drop below a certain "preservation level" (which is based on the item's Safety Stock level) - see “Items - Safety Stock” for more information).

The time fence time you define should represent the amount of time that is typically needed to replenish this item's quantity up to the safety stock.

Available rules are:

• No time fence: the time fence function is disabled.
• Lead Time: the length of the time fence is defined by the end item's lead time (Fixed Lead Time + [Variable Lead Time * order quantity]). If a PCAL shift is defined, the system calculates lead time according to that shift. Otherwise, it calculates lead time using 24 hours x 7 days a week. Select this option if the time to replenish this item's quantity should be represented only by the end item lead time.
• Accumulated Lead Time: the length of the time fence is defined by the accumulated lead time for the end item + the lead times for all of its component items (see “Defining Lead Time for APS Planning” for more information). If a PCAL shift is defined, the system calculates lead time according to that shift. Otherwise, it calculates lead time using 24 hours x 7 days a week. Select this option if the time to replenish this item's quantity should include the lead times of all the components (that is, the components may not typically be available).
• Specific Value: we do not recommend using this field. it is available only to provide backward compatibility. The length of the time fence is defined by the value in the Time Fence Value field (in days). The system calculates lead time using 24 hours x 7 days a week.