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<ManualTopic ID="/baanerp/cp/onlinemanual/000004" xml:lang="en">
	<Header>
		<Title xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40">Workload control, to compute planning priorities</Title>
		<Keyword><Level1>Workload control</Level1>
			<Level2>computing planning priorities</Level2>
		</Keyword>
		<Keyword><Level1>Planning priorities</Level1>
			<Level2>workload control</Level2>
		</Keyword>
		<Keyword><Level1>Priorities</Level1>
			<Level2>workload control</Level2>
		</Keyword>
	</Header>
	<GeneralSection><Paragraph>If the desired production volume for a plan period exceeds the capacity or material constraints, SSA ERP must make a selection. Some plan items can be planned immediately. The rest must be moved to the next or the preceding plan period.</Paragraph>
		<Paragraph>This selection is based upon the following planning data and item data:</Paragraph>
		<List><ListIntro>Planning data:</ListIntro>
			<ListItem>Production volume</ListItem>
			<ListItem>Volume moved</ListItem>
			<ListItem>Numbers of periods moved</ListItem>
		</List>
		<List><ListIntro>Item data:</ListIntro>
			<ListItem>Total material costs</ListItem>
			<ListItem>Production costs</ListItem>
			<ListItem>Item priority</ListItem>
		</List>
		<Paragraph>Item data can be defined in the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session.</Paragraph>
		<Paragraph>You can change the planning priority calculation in the <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000" role="session">Work Load Control Parameters (cpwlc2101m000)</GUIRef> session. The effects of the fields in that session are demonstrated in the <Link href="/baanerp/cp/onlinemanual/000005" role="manual">Workload control, a detailed example</Link> topic.</Paragraph>
		<GeneralSection><SectionTitle>Priority Level</SectionTitle>
			<List><ListIntro>A priority level is calculated for each plan item. Three different approaches are available. The priority level can be based on:</ListIntro>
				<ListItem>Planning data, such as the production volume</ListItem>
				<ListItem>Predefined item priorities (such as high, medium, low)</ListItem>
				<ListItem>A combination of planning data and item priorities</ListItem>
			</List>
			<Paragraph>Determine this by setting the <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.prio" role="formfield">Consider Item Priority</GUIRef> field.</Paragraph>
		</GeneralSection>
		<GeneralSection><SectionTitle>Planning data</SectionTitle>
			<Paragraph>If the <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.prio" role="formfield">Consider Item Priority</GUIRef> field is <GUIRef href="/baanerp/cp/domains/com.ynon#no" role="enum">No</GUIRef>, the priority level is based on planning data such as the production volume. The priority level is calculated according to the following method:</Paragraph>
			<List><ListItem>Backward/forward planning rules First, the priority level is set to one of the following:</ListItem>
			</List>
			<List><ListItem><GUIRef href="/baanerp/cp/domains/wlc.prru#prod.vol" role="enum">Production Volume</GUIRef> The production volume is the quantity to be produced in a plan period.</ListItem>
				<ListItem><GUIRef href="/baanerp/cp/domains/wlc.prru#vol.mov" role="enum">Volume Moved</GUIRef> The volume moved is the production volume that has been moved to another plan period.</ListItem>
				<ListItem><GUIRef href="/baanerp/cp/domains/wlc.prru#per.mov" role="enum">Number of Periods Moved</GUIRef> The number of periods that a certain production volume has been moved backward or forward.</ListItem>
				<ListItem><GUIRef href="/baanerp/cp/domains/wlc.prru#vol.per" role="enum">Volume and Periods Moved</GUIRef> The Volume and periods moved is defined as:</ListItem>
			</List>
			<Formula><Paragraph UserLevel="Novice" UserType="Taskuser">Volume moved * Number of periods moved</Paragraph>
			</Formula>
			<Paragraph>Separate rules for the backward and forward planning steps can be defined in the <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.bapr" role="formfield">Backward Plan. Rule</GUIRef> and <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.fopr" role="formfield">Forward Plan Rule</GUIRef> fields.</Paragraph>
			<Paragraph>Material and Production Costs The priority level that was determined in the previous step, can be adjusted by multiplying it by the material or production costs of the plan item. This is determined by the <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.macs" role="formfield">Consider Material Costs</GUIRef> or <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.prcs" role="formfield">Consider Production Costs</GUIRef> in the <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000" role="session">Work Load Control Parameters (cpwlc2101m000)</GUIRef> session.</Paragraph>
		</GeneralSection>
		<GeneralSection><SectionTitle>Predefined item priorities</SectionTitle>
			<Paragraph>If the <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.prio" role="formfield">Consider Item Priority</GUIRef> field is set to <GUIRef href="/baanerp/cp/domains/com.ynon#only" role="enum">Only</GUIRef>, the priority level is based on predefined item priorities. Item priorities can be low, medium, high, and so on. The priority of each plan item is recorded in the <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.prcs" role="formfield">Consider Production Costs</GUIRef> field in the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session.</Paragraph>
		</GeneralSection>
		<GeneralSection><SectionTitle>Combination of planning data and item priorities</SectionTitle>
			<Paragraph>If the <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.prio" role="formfield">Consider Item Priority</GUIRef> field is <GUIRef href="/baanerp/cp/domains/com.ynon#yes" role="enum">Yes</GUIRef>, the priority level is based on a combination of planning data and predefined item priorities. The priority level is calculated as follows:</Paragraph>
			<List><ListItem>A priority level is calculated in the way described above under the Planning data heading.</ListItem>
			</List>
			<Paragraph>The priority level is subsequently multiplied by a priority factor which reflects the relative importance of a plan item. The priority factor is based on the following table:</Paragraph>
			<TABLE border="1"><TBODY><TR><TH>Priority</TH>
						<TH>Priority Factor</TH>
					</TR>
					<TR><TD>Highest</TD>
						<TD>1.8</TD>
					</TR>
					<TR><TD>Very high</TD>
						<TD>1.6</TD>
					</TR>
					<TR><TD>Higher</TD>
						<TD>1.4</TD>
					</TR>
					<TR><TD>High</TD>
						<TD>1.2</TD>
					</TR>
					<TR><TD>Medium</TD>
						<TD>1</TD>
					</TR>
					<TR><TD>Low</TD>
						<TD>0.8</TD>
					</TR>
					<TR><TD>Lower</TD>
						<TD>0.6</TD>
					</TR>
					<TR><TD>Very Low</TD>
						<TD>0.4</TD>
					</TR>
					<TR><TD>Lowest</TD>
						<TD>0.2</TD>
					</TR>
				</TBODY>
			</TABLE>
			<Paragraph>The priority of an item is recorded in the <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.prcs" role="formfield">Consider Production Costs</GUIRef> field in the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session.</Paragraph>
		</GeneralSection>
		<Note><SectionTitle>Note</SectionTitle>
			<Paragraph>The unit of measure is not considered in the criterion of production volume. If the plan items are measured in a number of different units, such as piece, kg, or liter, the production volume is not a suitable criterion. In that case it is better to use the value of the production volume. Do this by selecting the <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.macs" role="formfield">Consider Material Costs</GUIRef> or <GUIRef href="/baanerp/cp/wlc/cpwlc2101m000#cpwlc200.prcs" role="formfield">Consider Production Costs</GUIRef> check boxes.</Paragraph>
			<Paragraph>If the planning rules result in the same priority level for two items, the item with the highest production volume is planned first.</Paragraph>
		</Note>
	</GeneralSection>
	<RelatedTopics><SectionTitle>Related topics</SectionTitle>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000003" role="manual">Workload control</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000001" role="manual">Workload control, planning algorithm</Link>
		</RelTopic>
	</RelatedTopics>
</ManualTopic>
