| # Scenario - Periods (cprpd4120m000) Use this session to define and maintain plan periods for the specified scenario. 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. Related topics To use a rolling scenario 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. Sequence Number The sequence number of the plan period defined for the scenario. Related topics sequence number 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. Related topics Scenarios in Enterprise Planning Plan periods in Enterprise Planning Renumber Starts the renumbering. |