<?xml version="1.0" encoding="utf-8"?>
<ManualTopic ID="/baanerp/cp/onlinemanual/000348" xml:lang="en">
	<Header>
		<Title xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40">To determine order start and finish date (basic procedure)</Title>
		<Keyword><Level1>Oder start date</Level1>
		</Keyword>
		<Keyword><Level1>Start date</Level1>
		</Keyword>
		<Keyword><Level1>Finish date</Level1>
		</Keyword>
	</Header>
	<AimSection><Paragraph>To be able to calculate lead times, SSA ERP must determine the start date and the finish date of an order. This topic describes the basic procedure that SSA ERP uses to do so.</Paragraph>
	</AimSection>
	<ProcedureSection><SectionTitle>Basic procedure</SectionTitle>
		<Steps><Step><StepTitle>Determine finish date</StepTitle>
				<Paragraph>Starting from the <Link href="/baanerp/cp/glossary/glossary#000101" role="glossary">planned requirement date</Link>, SSA ERP determines the finish date by planning the following lead times backward:</Paragraph>
				<List><ListItem>The <Link href="/baanerp/td/glossary/glossary#000041" role="glossary">safety time</Link> from the <GUIRef href="/baanerp/tc/ibd/tcibd2100s000" role="session">Item - Ordering (tcibd2100s000)</GUIRef> session (planned with the calendar of the item's enterprise unit).</ListItem>
					<ListItem>The <Link href="/baanerp/cp/glossary/glossary#000056" role="glossary">extra lead time</Link> from the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session (planned with the calendar of the item's enterprise unit).</ListItem>
				</List>
				<List><ListItem>The <Link href="/baanerp/wh/glossary/glossary#000406" role="glossary">outbound lead time</Link> from the <GUIRef href="/baanerp/wh/wmd/whwmd2110s000" role="session">Warehouse - Item (whwmd2110s000)</GUIRef> session (planned with the item/warehouse calendar).</ListItem>
				</List>
			</Step>
			<Step><StepTitle>Correct finish date for time fence</StepTitle>
				<Paragraph>If you do not simulate within the time fence, and the computed finish date falls before the time fence, the finish date is made equal to the time fence. If the time fence is zero, this means that the finish date is reset to the current date.</Paragraph>
				<Paragraph>If the <GUIRef href="/baanerp/cp/rpd/cprpd0100m000#cprpd000.fipl" role="formfield">Planned Order before Firm/Actual</GUIRef> check box in the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session is selected, the following applies:</Paragraph>
				<List><ListItem>The time fence for production orders is effectively extended to the last firm-planned or actual production order.</ListItem>
					<ListItem>The time fence for purchase orders is effectively extended to the last firm-planned or actual purchase order.</ListItem>
					<ListItem>The time fence for distribution orders is effectively extended to the last firm-planned distribution order.</ListItem>
				</List>
				<Paragraph>If you simulate within the time fence, the finish date can fall in the past.</Paragraph>
			</Step>
			<Step><StepTitle>Correct finish date for fixed-delivery moment</StepTitle>
				<Paragraph>If you specified a fixed-delivery code for the item in the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session, the finish date is set back to the latest fixed-delivery moment before the finish date.</Paragraph>
				<Paragraph>In the following cases, <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> resets the finish date to the first fixed-delivery moment after the current finish date:</Paragraph>
				<List><ListItem>The latest fixed-delivery moment before the finish date falls before the scenario start date.</ListItem>
					<ListItem>You do not simulate within the time fence and the latest fixed-delivery moment before the finish date falls before the time fence.</ListItem>
				</List>
			</Step>
			<Step><StepTitle>Determine start date</StepTitle>
				<Paragraph>Starting from the finish date, SSA ERP determines the start date by planning backward the effective supply lead time.</Paragraph>
				<Paragraph>It is possible that the computed start date of a planned order falls in the past. SSA ERP does not correct this date.</Paragraph>
			</Step>
			<Step><StepTitle>Correct start date and finish date for scenario start date</StepTitle>
				<Paragraph>If the computed start date or finish date falls before the scenario start date, it is made equal to the scenario start date.</Paragraph>
			</Step>
		</Steps>
	</ProcedureSection>
	<RelatedTopics><SectionTitle>Related topics</SectionTitle>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000161" role="manual">To compute supply lead-times</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>
