<?xml version="1.0" encoding="utf-8"?>
<ManualTopic ID="/baanerp/cp/onlinemanual/000150" xml:lang="en">
   <Header>
      <Title>To use a rolling scenario</Title>
      <Keyword type="header" order="d1e194291">
         <Level1>Rolling scenario</Level1>
      </Keyword>
   </Header>
   <GeneralSection>
      <Paragraph>If a scenario is defined
      as a rolling scenario in the <GUIRef href="/baanerp/cp/rpd/cprpd4100m000" role="session">Scenarios (cprpd4100m000)</GUIRef> session, LN regularly shifts the entire scenario a
      particular interval forward in time.</Paragraph>
      <GeneralSection>
         <SectionTitle>Diagram</SectionTitle>
         <Paragraph/>
         <Paragraph>The following
          diagram illustrates the rolling procedure. In this example, the rolling
          frequency is 7 days.</Paragraph>
         <Figure space-and-orientation="indented-estimated">
            <HTML:IMG xmlns:HTML="http://www.w3.org/TR/REC-html40" height="432" width="432"
                      SRC="../images/tr_graph_000150.gif"
                      alt="[...]"/>
            <FigLegend>
               <LegendEntry>
                  <Symbol>A</Symbol>
                  <Desc>Start date</Desc>
               </LegendEntry>
               <LegendEntry>
                  <Symbol>B</Symbol>
                  <Desc>Reference date</Desc>
               </LegendEntry>
               <LegendEntry>
                  <Symbol>C</Symbol>
                  <Desc>Current date</Desc>
               </LegendEntry>
               <LegendEntry>
                  <Symbol>D</Symbol>
                  <Desc>Finish date</Desc>
               </LegendEntry>
            </FigLegend>
         </Figure>
      </GeneralSection>
      <GeneralSection>
         <SectionTitle>How to roll a scenario</SectionTitle>
         <List>
            <ListIntro>Use the <GUIRef href="/baanerp/cp/rpd/cprpd4200m000" role="session">Initialize, Roll, and Update Scenario (cprpd4200m000)</GUIRef> session to roll a scenario. If you
          select a scenario that needs to be rolled, LN automatically performs a full
          update for that scenario:</ListIntro>
            <ListItem>Shift the scenario
          forward.</ListItem>
            <ListItem>Update all item master
          plans and channel master plans, including the goods-flow data, and critical
          material and capacity requirements.</ListItem>
            <ListItem>Rebuild all resource
          master plans.</ListItem>
         </List>
         <Paragraph>If a multisite
        scenario is rolled, LN also rolls all local scenarios that belong to the
        multisite scenario.</Paragraph>
      </GeneralSection>
      <Note>
         <SectionTitle>Note</SectionTitle>
         <Paragraph>A scenario needs to be
        rolled if the current date is greater than the <Link href="/baanerp/cp/glossary/glossary#000022" role="glossary">reference date</Link> plus the <Link href="/baanerp/cp/glossary/glossary#000021" role="glossary">rolling frequency</Link>.</Paragraph>
      </Note>
      <GeneralSection>
         <SectionTitle>Overview of the procedure</SectionTitle>
         <List>
            <ListIntro>LN shifts the scenario forward by the number of days
          specified in the <GUIRef href="/baanerp/cp/rpd/cprpd4100m000#cprpd400.rofr" role="manual">Rolling Frequency</GUIRef> field in the <GUIRef href="/baanerp/cp/rpd/cprpd4100m000" role="session">Scenarios (cprpd4100m000)</GUIRef> session. The following fields in this session are
          updated:</ListIntro>
            <ListItem> 
               <GUIRef href="/baanerp/cp/rpd/cprpd4100m000#cprpd400.plsd" role="manual">Scenario Start Date</GUIRef>
            </ListItem>
            <ListItem> 
               <GUIRef href="/baanerp/cp/rpd/cprpd4100m000#cprpd400.plfd" role="manual">Scenario Finish Date</GUIRef>
            </ListItem>
            <ListItem> 
               <GUIRef href="/baanerp/cp/rpd/cprpd4100m000#cprpd400.reda" role="manual">Reference Date</GUIRef>
            </ListItem>
         </List>
         <Paragraph>Note that this update
        also affects the plan-period dates. LN updates these dates in all item
        master plans and channel master plans that are present in the scenario.</Paragraph>
         <Paragraph>Because plan periods
        can be of unequal length, a special procedure is needed to redistribute the
        master-plan data over the new plan periods.</Paragraph>
      </GeneralSection>
      <GeneralSection>
         <SectionTitle>Step 1</SectionTitle>
         <Paragraph>LN disaggregates
        the master-plan quantities of the rolling scenario (for example, the
        production-plan quantities) over the calendar days of the relevant plan period.
        This disaggregation is based on the company calendar: for a detailed
        description, see <Link href="/baanerp/cp/onlinemanual/000132" role="manual">To distribute master-plan quantities over calendar days</Link>.</Paragraph>
      </GeneralSection>
      <GeneralSection>
         <SectionTitle>Step 2</SectionTitle>
         <Paragraph>LN aggregates the
        quantities of each day to the new plan periods.</Paragraph>
      </GeneralSection>
   </GeneralSection>
   <RelatedTopics>
      <SectionTitle>Related topics</SectionTitle>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000044" role="manual">Scenarios in Enterprise Planning</Link>
      </RelTopic>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000302" role="manual">Plan periods in Enterprise Planning</Link>
      </RelTopic>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000148" role="manual">Multisite planning</Link>
      </RelTopic>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000132" role="manual">To distribute master-plan quantities over calendar days</Link>
      </RelTopic>
   </RelatedTopics>
</ManualTopic>