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<ManualTopic ID="/baanerp/td/onlinemanual/000343" xml:lang="en">
	<Header>
		<Title xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40">Constraints for generating non-referenced purchase schedule lines</Title>
		<Keyword><Level1>purchase schedule</Level1>
		</Keyword>
		<Keyword><Level1>purchase schedule line</Level1>
		</Keyword>
		<Keyword><Level1>non-referenced schedule</Level1>
		</Keyword>
	</Header>
	<AimSection><Paragraph>If <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> automatically generates <Link href="/baanerp/td/glossary/glossary#000338" role="glossary">non-referenced</Link> purchase schedule lines, <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> can send requirements to the <GUIRef href="/baanerp/td/pur" role="module">Purchase Control</GUIRef> module (generate/update schedule lines), dependent on the following constraints:</Paragraph>
		<List><ListItem>Frozen zone settings.</ListItem>
			<ListItem>Generation horizon of the patterns.</ListItem>
			<ListItem>Expiry date of the contract.</ListItem>
			<ListItem>Firm Planned status of the schedule line.</ListItem>
		</List>
	</AimSection>
	<GeneralSection><SectionTitle>Frozen Zone Settings</SectionTitle>
		<Paragraph>During the following frozen time zones, which are defined in the <GUIRef href="/baanerp/td/pur/tdpur3102m000" role="session">Purchase Contract Line Logistic Data (tdpur3102m000)</GUIRef> session and/or the <GUIRef href="/baanerp/td/ipu/tdipu0110m000" role="session">Item - Purchase Business Partner (tdipu0110m000)</GUIRef> session, the <GUIRef href="/baanerp/td/pur" role="module">Purchase Control</GUIRef> module generates delivery moments. The delivery moments generated in the frozen time zone, can be viewed by <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> in the <GUIRef href="/baanerp/td/ipu/tdipu0125m000" role="session">Planned Delivery Moments (Shipment Based) (tdipu0125m000)</GUIRef> session and the <GUIRef href="/baanerp/td/ipu/tdipu0126m000" role="session">Planned Delivery Moments (Delivery Based) (tdipu0126m000)</GUIRef> session, but each time interval has unique constraints for generating schedule lines:</Paragraph>
		<List><ListItemHead><Link href="/baanerp/td/glossary/glossary#000346" role="glossary">Frozen period</Link>
			</ListItemHead>
			<ListItem>During the frozen period, <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> cannot generate/update schedule lines.</ListItem>
			<ListItemHead><Link href="/baanerp/td/glossary/glossary#000347" role="glossary">Upper bound</Link>
			</ListItemHead>
			<ListItem>During the period of upper bound, the schedule line quantities can decrease, but not increase. As a result, <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> cannot generate new schedule lines in this period.</ListItem>
			<ListItemHead><Link href="/baanerp/td/glossary/glossary#000348" role="glossary">Lower bound</Link>
			</ListItemHead>
			<ListItem>During the period of lower bound, the schedule line quantities are allowed to increase, but not to decrease. As a result, <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> can generate new schedule lines in this period, but existing schedule lines cannot be deleted.</ListItem>
		</List>
		<Note><SectionTitle>Note</SectionTitle>
			<Paragraph>Although <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> cannot increase the schedule line quantity in the frozen period, or during the period of upper bound, SSA ERP automatically stores the demand at the first available delivery moment that falls outside these periods.</Paragraph>
		</Note>
	</GeneralSection>
	<GeneralSection><SectionTitle>Generation Horizon of the Patterns</SectionTitle>
		<Paragraph>In <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef>, requirements are grouped based on the delivery moments generated in the <GUIRef href="/baanerp/td/ipu/tdipu0225m000" role="session">Generate Planned Delivery Moments (tdipu0225m000)</GUIRef> session. In the <GUIRef href="/baanerp/td/ipu/tdipu0225m000" role="session">Generate Planned Delivery Moments (tdipu0225m000)</GUIRef> session, you must define a horizon end date. The horizon end date is the date until which the delivery moments are stored in the <GUIRef href="/baanerp/td/ipu/tdipu0125m000" role="session">Planned Delivery Moments (Shipment Based) (tdipu0125m000)</GUIRef> session and the <GUIRef href="/baanerp/td/ipu/tdipu0126m000" role="session">Planned Delivery Moments (Delivery Based) (tdipu0126m000)</GUIRef> session, from which the delivery moments can be called on by <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> for lead time <Link href="/baanerp/td/glossary/glossary#000345" role="glossary">offsetting</Link>. Because delivery moments are not calculated for the period after the horizon end date, <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> cannot find valid delivery moments for this period. As a result, for the period after the horzion end date, <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> is free to plan its own delivery moments.</Paragraph>
	</GeneralSection>
	<GeneralSection><SectionTitle>Expiry Date of the Contract</SectionTitle>
		<Paragraph>If requirements fall after the contract's expiry date, valid business partners can no longer be found. As a result, <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> generates planned purchase orders without a supplier. In this case, SSA ERP sends a signal to <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> that a planned purchase order is generated instead of a schedule line.</Paragraph>
	</GeneralSection>
	<GeneralSection><SectionTitle>Firm Planned status of the schedule line</SectionTitle>
		<Paragraph>If you click <GUIRef href="/baanerp/td/pur/tdpur3111m000#make.line.firm" role="form command">Firm Planned</GUIRef> in the <GUIRef href="/baanerp/td/pur/tdpur3111m000" role="session">Purchase Schedule - Lines (tdpur3111m000)</GUIRef> session, you can make a schedule line Firm Planned. If a schedule line is made <GUIRef href="/baanerp/td/pur/tdpur3111m000#tdpur311.manp" role="field">Firm Planned</GUIRef>, the schedule line cannot be changed during the next run of <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef>.</Paragraph>
	</GeneralSection>
	<ExampleSection><SectionTitle>Example</SectionTitle>
		<Figure><HTML:IMG SRC="../images/Offlinetable.gif" height="271" width="606" xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40"/><FigLegend><LegendEntry><Symbol>Period 1</Symbol>
					<Desc>The frozen period.</Desc>
				</LegendEntry>
				<LegendEntry><Symbol>Period 2</Symbol>
					<Desc>The period of lower bound. If the frozen zone- ended before the frozen zone+, an upper bound would be applicable.</Desc>
				</LegendEntry>
				<LegendEntry><Symbol>Period 3</Symbol>
					<Desc>For this period, the delivery moments generated in the <GUIRef href="/baanerp/td/ipu/tdipu0225m000" role="session">Generate Planned Delivery Moments (tdipu0225m000)</GUIRef> session, which are displayed in the <GUIRef href="/baanerp/td/ipu/tdipu0125m000" role="session">Planned Delivery Moments (Shipment Based) (tdipu0125m000)</GUIRef> or the <GUIRef href="/baanerp/td/ipu/tdipu0126m000" role="session">Planned Delivery Moments (Delivery Based) (tdipu0126m000)</GUIRef> session, can be used by <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> for lead time offsetting, and schedule lines can be generated.</Desc>
				</LegendEntry>
				<LegendEntry><Symbol>Period 4</Symbol>
					<Desc>The period for which no valid delivery moments are displayed in the <GUIRef href="/baanerp/td/ipu/tdipu0125m000" role="session">Planned Delivery Moments (Shipment Based) (tdipu0125m000)</GUIRef> or the <GUIRef href="/baanerp/td/ipu/tdipu0126m000" role="session">Planned Delivery Moments (Delivery Based) (tdipu0126m000)</GUIRef> session. In this period, <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> is free to plan its own delivery moments while generating schedule lines.</Desc>
				</LegendEntry>
				<LegendEntry><Symbol>Period 5</Symbol>
					<Desc>The contract has expired. A planned purchase order is generated instead of a purchase schedule line.</Desc>
				</LegendEntry>
			</FigLegend>
		</Figure>
	</ExampleSection>
	<RelatedTopics><SectionTitle>Related topics</SectionTitle>
		<RelTopic><Link href="/baanerp/td/onlinemanual/000010" role="manual">Purchase schedules, basic data</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/td/onlinemanual/000352" role="manual">Planned delivery moments</Link>
		</RelTopic>
	</RelatedTopics>
</ManualTopic>
