Net-change simulationsA planning run or simulation in Enterprise Planning can be carried out in two modes:
This applies to master planning as well as order planning. Regenerative planning run In a regenerative simulation, the planned supply of each plan item is recomputed, regardless of whether the planning data has changed since the last run or not. A regenerative simulation can take many hours. Net-change planning run In a net-change planning run, the master plan or planned orders are only regenerated for plan items for which the planning data has changed since the previous calculation, and for plan items that are affected by such changes. In general, a net-change run takes less time than a regenerative run. LN takes two types of changes into account:
Net-change date The Net Change check box in the Items - Planning (cprpd1100m000) session indicates whether a plan item changed after the previous planning run. LN records the earliest of these changes, the net-change date, in the Net Change Date field. During a simulation, LN resets the plan item's net-change status. Note LN maintains a single net-change date for both master planning and order planning. Net-change and clustered items If a particular change is related to a particular cluster by means of the warehouse, LN marks the related clustered item as changed. If a change is not related to a cluster, LN marks all plan items for the item as changed. Example Suppose the following events occurred:
To perform a net-change planning run You can perform net-change planning in a master-planning run and in an order-planning run:
Note
Pegging net change Between two regenerative or net-change planning runs, you can perform multiple net-change updates of the pegging information. For more information, refer to Pegging for planned orders.
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