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<ManualTopic ID="/baanerp/cp/onlinemanual/000161" xml:lang="en">
	<Header>
		<Title xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40">To compute supply lead-times</Title>
		<Keyword><Level1>Computing Supply Lead Times</Level1>
		</Keyword>
		<Keyword><Level1>Supply lead times</Level1>
		</Keyword>
	</Header>
	<GeneralSection><Paragraph>The order dates (start dates) and delivery dates (finish dates) for <Link href="/baanerp/cp/glossary/glossary#000050" role="glossary">planned orders</Link> in <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> can be determined in a number of ways.</Paragraph>
		<List><ListIntro>The following factors play an important role in determining the order start and finish date:</ListIntro>
			<ListItem>Lead times defined for various parts of the supply process.</ListItem>
			<ListItem>Calendars (which define workdays and working hours).</ListItem>
			<ListItem>Distance between the supplying and receiving address.</ListItem>
		</List>
	</GeneralSection>
	<GeneralSection><Paragraph>For information about the way in which SSA ERP determines order start and finish date, refer to online manual topic <Link href="/baanerp/cp/onlinemanual/000348" role="manual" actuate="auto">To determine order start and finish date (basic procedure)</Link>.</Paragraph>
		<GeneralSection><Paragraph>In general, the following applies to the start dates and finish dates of planned orders:</Paragraph>
			<List><ListItem>The start date and finish date are never before the scenario start date.</ListItem>
				<ListItem>The start date can be in the past.</ListItem>
				<ListItem>If you simulate within the time fence, the finish date can be in the past.</ListItem>
				<ListItem>If you do not simulate within the time fence, the finish date is never before the time fence (and never in the past).</ListItem>
				<ListItem>If you use fixed deliveries and simulate within the time fence, the finish date is always on a fixed delivery moment.</ListItem>
				<ListItem>If you use fixed deliveries and do not simulate within the time fence, the finish date is always on a fixed delivery moment after the time fence.</ListItem>
			</List>
		</GeneralSection>
		<GeneralSection><SectionTitle>Supply lead time</SectionTitle>
			<Paragraph>The effective supply lead time depends on the type of order, and the planning method used.</Paragraph>
		</GeneralSection>
		<GeneralSection><SectionTitle>Production lead time</SectionTitle>
			<List><ListIntro>Planned production orders can be planned in two ways:</ListIntro>
				<ListItem>Based on detailed <Link href="/baanerp/ti/glossary/glossary#Routing.ti" role="glossary">routing</Link> data, using the appropriate calendars</ListItem>
				<ListItem>Based on a <Link href="/baanerp/cp/glossary/glossary#000057" role="glossary">fixed lead time</Link>, using the enterprise-unit calendar</ListItem>
			</List>
		</GeneralSection>
		<GeneralSection><SectionTitle>Purchase lead time</SectionTitle>
			<List><ListIntro>Planned purchase orders are planned using various types of lead-time data:</ListIntro>
				<ListItem>Item/supplier data (or item purchase data, if no supplier can be found)</ListItem>
				<ListItem>Item/warehouse data</ListItem>
				<ListItem>Distance tables</ListItem>
			</List>
			<Paragraph>Planned purchase orders can be planned in two ways:</Paragraph>
			<List><ListItem>Based on various types of lead times, using the appropriate calendars.</ListItem>
				<ListItem>Based on a calculated lead time, interpreted as calendar days.</ListItem>
			</List>
		</GeneralSection>
		<GeneralSection><SectionTitle>Distribution lead time</SectionTitle>
			<Paragraph>Planned distribution orders are planned by using <Link href="/baanerp/cp/glossary/glossary#000005" role="glossary">supplying relationships</Link>.</Paragraph>
			<Paragraph>Planned distribution orders can be planned in two ways:</Paragraph>
			<List><ListItem>Based on distance tables, using an appropriate calendar.</ListItem>
				<ListItem>Based on the fixed supply lead time defined in the <GUIRef href="/baanerp/cp/rpd/cprpd7130m000" role="session">Supplying Relationships (cprpd7130m000)</GUIRef> session, using an appropriate calendar.</ListItem>
			</List>
			<Paragraph>In general, there are two ways in which <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> calculates order start dates and order finish dates of planned orders:</Paragraph>
			<List><ListItem>Based on a fixed value that the user defines, or that SSA ERP calculates.</ListItem>
				<ListItem>Based on item-specific data about each lead-time component in the <Link href="/baanerp/tc/glossary/glossary#000010" role="glossary">order lead time</Link>.</ListItem>
			</List>
			<Paragraph>Which of these two methods <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> uses, depends on the order type, and on whether the finish date that <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> finds, is before or after the <Link href="/baanerp/cp/glossary/glossary#000058" role="glossary">fixed lead-time horizon</Link>.</Paragraph>
			<Paragraph>For detailed information about lead-time calculation according to order type, you can refer to the corresponding related topic.</Paragraph>
		</GeneralSection>
	</GeneralSection>
	<RelatedTopics><SectionTitle>Related topics</SectionTitle>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000046" role="manual">Allocation rule: historic percentage</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000314" role="manual">Production Lead-time Calculation</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000061" role="manual">Distribution lead time based on the supply calendar</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000062" role="manual">Distribution Lead-time Calculation</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000034" role="manual">The use of calendars in Enterprise Planning</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000335" role="manual">Purchase lead time calculation</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000335" role="manual">Purchase lead time calculation</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000314" role="manual">Production Lead-time Calculation</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000062" role="manual">Distribution Lead-time Calculation</Link>
		</RelTopic>
	</RelatedTopics>
</ManualTopic>
