| | Scenario - Periods (cprpd4120m000)Define the plan
periods between the dates specified in the Scenario Start Date field and the Scenario Finish Date field in the Scenarios (cprpd4100m000) session. Define plan periods
for every scenario, even if you only use order planning. The planning works best if you follow these
recommendations: - Do not define more
than 50 plan periods.
- If you define plan
periods of unequal size, the larger plan periods preferably should be an
integer multiple of the smaller plan periods. For example, plan periods of 3
days, 6 days, and 24 days work better than plan periods of 4 days, 7 days, and
30 days.
Note Changes in the
plan-period definition take effect after you update the master plans by means
of the Initialize, Roll, and Update Scenario (cprpd4200m000) session. Scenario The identification of an overall planning solution. Each scenario represents one overall planning solution, and
involves particular settings for the planning of items and resources. You can
use scenarios to analyze and compare various planning options and to find the
best planning solution. For example, you can vary demand forecasts or sourcing
strategies. One of the scenarios is the actual scenario, which
corresponds with the actual planning situation. You can only transfer planned
orders and production plans from the actual scenario to the execution level of LN. Period Type Select Day, Week, or Month from the pull-down menu as the unit of time for the
plan periods. This is also the
value by which LN shifts the
plan periods,
if you select Rolling in the Period Start field. Period Length If you selected Days in the Period Type field, you must define the length of the plan period in calendar days
in this field. Number of Periods The number of consecutive plan periods, the length of which is
defined by means of the Period Length field. Period Start Select one of the options from the pull-down menu to specify
how LN must determine the period start date. The way LN determines the start date of the
plan period
not only depends on the setting of the Period Start field, but also on whether or not the
scenario is a rolling scenario. If you selected the Rolling Scenario check
box in the Scenarios (cprpd4100m000) session, LN shifts the scenario forward in time when the value
of the current date is higher than the sum of the reference date and the rolling frequency. LN then shifts the scenario forward in time by the value of
the rolling
frequency. When LN rolls
the scenario, it
updates the dates of the plan periods and
redistributes the master-plan quantities over the new plan periods. The
rolling
scenario functionality applies to the entire
scenario, whereas
the setting of the Period Start field only applies to the way that LN determines the start
date of a period with regard to the current date. If you select a day
of the week or a date of the month, LN only changes the master-plan
quantities of the first plan period, as the current date
advances. LN leaves the rest of the
plan periods
untouched. If you select Rolling in the Period Start field, LN shifts the
plan periods
forward in time from the current date by the value of the Period Type field, and redistributes the master-plan quantities over the
shifted plan
periods. The options that you can select are determined by the
value of the Period Type field: - If you selected Day, LN defaults the Period Start field to Rolling.
- If you select Week,
you can select Rolling or a specific
day of the week.
- If you select Month,
you can select Rolling or a specific
day of the month.
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