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<ManualTopic ID="/baanerp/cp/onlinemanual/000166" xml:lang="en">
	<Header>
		<Title xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40">Week-bucket planning</Title>
		<Keyword><Level1>Week-bucket planning</Level1>
		</Keyword>
	</Header>
	<GeneralSection><Paragraph>As a rule, SSA ERP plans all (planned or actual) production orders in detail. Each production order has a specific start date and finish date, with a minimal order leadtime in between.</Paragraph>
		<Paragraph>An alternative planning method for (planned or actual) production orders is week-bucket planning. The idea behind week-bucket planning is that the exact sequencing of orders that fall within one week is not fixed in the planning, but is determined at the shop floor.</Paragraph>
		<GeneralSection><SectionTitle>Basic procedure</SectionTitle>
			<Paragraph>In the <GUIRef href="/baanerp/ti/rou/tirou1101m000" role="session">Item - Routings (tirou1101m000)</GUIRef> session you can indicate that you want to use week-bucket planning for a certain routing. To do this you select the <GUIRef href="" role="manual">Week Bucket Planning</GUIRef> check box. If you select this check box, all operations that belong to the order will be planned, by using week-bucket planning.</Paragraph>
			<Paragraph>The basic idea is that SSA ERP stretches an order in such a way that it covers a whole week. By using week-bucket planning for all orders carried out at a certain work center (or for a number of these orders), you can leave the exact sequencing of these orders to the shop floor.</Paragraph>
			<List><ListIntro>The most straightforward application of week-bucket planning is one in which:</ListIntro>
				<ListItem>The order lead time is shorter than one week.</ListItem>
				<ListItem>All operations of the order are carried out at the same work center (resource).</ListItem>
			</List>
		</GeneralSection>
		<GeneralSection><SectionTitle>Backward planning</SectionTitle>
			<List><ListIntro>In the case of backward planning (used for generating planned orders in Enterprise Planning), week-bucket planning is carried out as follows:</ListIntro>
				<ListItem>If the end date of the order does not coincide with the end of the week, it is moved back to the end of the previous week.</ListItem>
				<ListItem>The start date of the first operation is moved back to the beginning of the week (the end date of this operation remains unchanged). As a result, all exploded requirements that are not linked to a specific operation, as well as those that are linked to the first operation, are placed at the beginning of the week.</ListItem>
			</List>
		</GeneralSection>
		<Note><SectionTitle>Note</SectionTitle>
			<List><ListItem>If the normal lead time of an order is longer than a week, week-bucket planning stretches out the order over two or more weeks.</ListItem>
				<ListItem>The week-bucket planning logic also applies if an order contains operations that are carried out at different work centers (resources). Only the first operation is stretched out, so that the order as a whole covers a whole week (or several weeks).</ListItem>
				<ListItem>If you manually set the end date of a (planned or actual) production order, SSA ERP will no longer move that end date. Instead, SSA ERP will place the start date at the beginning of the week (or an earlier week, depending on the lead time of the order).</ListItem>
			</List>
		</Note>
		<GeneralSection><SectionTitle>Forward planning</SectionTitle>
			<Paragraph>In the case of forward planning, week-bucket planning is applied by moving forward the end date of the last operation to the end of the week. The effect is largely similar to that of backward week-bucket planning, except that the order only covers a whole week if you manually set the start date at the beginning of the week. If you set the start date at a later moment, SSA ERP will not move it back. In such a case, the order is made to cover the remainder of the week (and possibly one or more weeks after that, depending on the lead-time of the order).</Paragraph>
		</GeneralSection>
	</GeneralSection>
	<RelatedTopics><SectionTitle>Related topics</SectionTitle>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000021" role="manual">Order planning, an overview</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/ti/onlinemanual/000183" role="manual">Planning production orders in SFC</Link>
		</RelTopic>
	</RelatedTopics>
</ManualTopic>
