<?xml version="1.0" encoding="utf-8"?>
<ManualTopic ID="/baanerp/cp/onlinemanual/000053" xml:lang="en">
	<Header>
		<Title xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40">To recompute phase numbers</Title>
		<Keyword><Level1>Phase numbers</Level1>
			<Level2>recomputing</Level2>
		</Keyword>
	</Header>
	<GeneralSection><Paragraph>The phase numbers can be recalculated manually or automatically.</Paragraph>
		<Paragraph>You can recalculate the phase numbers manually with the <GUIRef href="/baanerp/cp/rpd/cprpd6200m000" role="session">Compute Phase Numbers (cprpd6200m000)</GUIRef> session.</Paragraph>
		<List><ListIntro>If the <GUIRef href="/baanerp/cp/rpd/cprpd0100m000#cprpd000.opup" role="formfield">Online Phase Number Update</GUIRef> check box in the <GUIRef href="/baanerp/cp/rpd/cprpd0100m000" role="session">EP Parameters (cprpd0100m000)</GUIRef> session is selected, SSA ERP updates the phase numbers online whenever there is a change in either:</ListIntro>
			<ListItem>The <Link href="/baanerp/ti/glossary/glossary#BillOfMateri.ti" role="glossary">bill of material (BOM)</Link>
			</ListItem>
			<ListItem>The <Link href="/baanerp/ti/glossary/glossary#000081" role="glossary">bill of critical materials (BCM)</Link>
			</ListItem>
			<ListItem>The <Link href="/baanerp/cp/glossary/glossary#000005" role="glossary">supplying relationships</Link>
			</ListItem>
		</List>
		<Note><SectionTitle>Note</SectionTitle>
			<Paragraph>Online updating of phase numbers reduces the system performance, especially when you enter or generate a large number of BOM lines or BCM lines at once.</Paragraph>
		</Note>
		<List><ListIntro>The difference between the phase numbers for <Link href="/baanerp/cp/glossary/glossary#000059" role="glossary">master planning</Link> and the phase numbers for <Link href="/baanerp/cp/glossary/glossary#000060" role="glossary">order planning</Link> is:</ListIntro>
			<ListItem>Master-planning phase numbers are based on the BCMs, whereas order-planning phase numbers are based on the BOMs.</ListItem>
			<ListItem>Master-planning phase numbers take the plan units into account.</ListItem>
		</List>
	</GeneralSection>
	<RelatedTopics><SectionTitle>Related topics</SectionTitle>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000156" role="manual">Planning sequence and phase numbers</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000155" role="manual">To compute phase numbers for master-based planning</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000054" role="manual">To compute phase numbers for order-based planning</Link>
		</RelTopic>
	</RelatedTopics>
</ManualTopic>
