Net-change date before time fence
If LN detects changes that influence planned orders, for example, a changed BOM, LN sets the net-change date to the date of these changes. A zero net-change date indicates that nothing has changed since the last simulation. After simulating an item, LN resets the net-change date to zero.
If the net-change date lies before the time-fence date, two problems arise:
- If you do not simulate within the time fence, your planning might not be up-to-date.
- You cannot see whether or not the net-change date must be reset.
Resetting the net-change date
If you run an order simulation by means of the Generate Order Planning (cprrp1210m000) session or the Generate Order Planning (Item) (cprrp1220m000) session, the Reset Net Change in Time Fence check box determines if LN resets a net-change date that falls within the time fence.
If the Generate within check box is selected, LN always resets the net-change date. In this case, the Reset Net Change in Time Fence check box is unavailable.
If you clear the Reset Net Change in Time Fence check box, LN does not reset a net-change date that falls within the time fence.
This setting has the following consequences:
- The advantage is that if you ignore the time fence during a next simulation, the correct net-change information is still available.
- The disadvantage is that as long as this net-change date exists, any net-change simulation usually starts at the time fence. As a result, you effectively lose the advantage of the net-change method.
If you select the Reset Net Change in Time Fence check box, LN always resets the net-change date.
This setting has the following consequences:
- The advantage is that the net-change method will still work after the simulation.
- The disadvantage is that after the simulation, the reset net-change status suggests that the planning is up-to-date, which is possibly not the case. Even if you ignore the time fence in a next simulation, the correct net-change information is no longer available.
In master planning, a net-change date that falls before the time fence is always reset during a simulation.