Modifying Production Order Duration
Occasionally, you may need to manually increase or decrease the production order duration. For example, you may want to expedite a production order and thereby collapse the average duration of the order. Or you may need to expand the duration, starting earlier to complete by the due date.
Production order duration is initially derived from the item manufacturing lead-time or calculated per the required capacity of the production order, factoring resource capacity. Other consideration may influence the amount of time to produce an item, considering:
• Average capacity
• Order quantity
• Operation lead time
• Process time
Production Order Duration can be greater, less than, or equal to the calculated routing duration. To modify the production order duration, use one of the following options:
• Manually update the Duration field in the Date/Time sub-tab in Production Order Maintenance.
• Modify the production order release date only when the due date is anchored; modifying the release dates increases or decreases the duration value.
• Set the Order Duration Calc Method in the Scheduling tab of Preferences, under Option in the top tool bar. This sets the method to calculate the order duration when the order is firmed, created, and modified.
Note: You can set the Order Duration Calc Method in the Scheduling tab of Preferences, under Options in the top tool bar. This sets the method to calculate the order duration when the order is firmed, created, and modified (future). When you select a different calculation method from user preferences, the Order Duration Calc Method takes precedence over the standard duration calculation; see
Select the Method for Date Calculations.