<?xml version="1.0" encoding="utf-8"?>
<ManualTopic ID="/baanerp/tc/onlinemanual/000135" xml:lang="en">
	<Header>
		<Title xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40">Calendar input for lead time</Title>
		<Keyword><Level1>lead time</Level1>
		</Keyword>
	</Header>
	<GeneralSection><List><ListIntro>SSA ERP uses lead times to calculate the time to start producing, ordering, or shipping goods, and to find out when the goods can arrive or can be finished. Lead time calculations are important for reliable planning and scheduling, to produce and deliver when required. The calculations must be correct, complete, and make use of:</ListIntro>
			<ListItem>Lead-time elements used for offsetting.</ListItem>
			<ListItem>The <Link href="/baanerp/tc/glossary/glossary#000370" role="glossary">calendar recurrences</Link> used to model fixed deliveries.</ListItem>
			<ListItem>The <Link href="/baanerp/tc/glossary/glossary#Calendar.tc" role="glossary">calendars</Link> used for offsetting.</ListItem>
			<ListItem>Relationships between fixed deliveries and calendars.</ListItem>
			<ListItem>Relationship between offsetting and clustering.</ListItem>
		</List>
		<List><ListIntro>The Calendars and Periods (CCP) module looks for a date in a higher level calendar if the end date of a calendar is reached, not with a priority path, but with a derivation path up to the <Link href="/baanerp/tc/glossary/glossary#StandaCalend.tc" role="glossary">standard calendar</Link>. Every entity is linked to a calendar with a start date and an end date. If the end date is before the delivery date of the requirement, SSA ERP looks for dates in the <Link href="/baanerp/tc/glossary/glossary#StandaCalend.tc" role="glossary">standard calendar</Link>. The standard calendar is the base-capacity definition, and is used to plan dates the fall outside the period that a specific calendar covers. In other words, the standard calendar is the top calendar, which contains the following basic planning data for each day:</ListIntro>
			<ListItem>An <Link href="/baanerp/tc/glossary/glossary#ResoActiType.tc" role="glossary">availability type</Link>.</ListItem>
			<ListItem>A <Link href="/baanerp/tc/glossary/glossary#TimeIntervTy.tc" role="glossary">working hours type</Link> with a default <Link href="/baanerp/tc/glossary/glossary#000368" role="glossary">efficiency factor</Link> and a maximum <Link href="/baanerp/tc/glossary/glossary#CapaciPercen.tc" role="glossary">capacity percentage</Link>.</ListItem>
		</List>
		<Note><SectionTitle>Note</SectionTitle>
			<Paragraph>You can also enter a package availability type in the parameter sessions to optimize the planning accuracy.</Paragraph>
		</Note>
	</GeneralSection>
	<RelatedTopics><SectionTitle>Related topics</SectionTitle>
		<RelTopic><Link href="/baanerp/tc/onlinemanual/000125" role="manual">To set up a calendar</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000420" role="manual">Lead-time offsetting</Link>
		</RelTopic>
	</RelatedTopics>
</ManualTopic>
