<?xml version="1.0" encoding="utf-8"?>
<ManualTopic ID="/baanerp/td/onlinemanual/000021" xml:lang="en">
	<Header>
		<Title xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40">Purchase order/schedule history</Title>
		<Keyword><Level1>purchase order</Level1>
		</Keyword>
		<Keyword><Level1>purchase schedule</Level1>
		</Keyword>
		<Keyword><Level1>history</Level1>
		</Keyword>
	</Header>
	<GeneralSection><Paragraph>You can use purchase order/schedule history to track creations and modifications to purchase orders/schedules. You can, if necessary, keep certain information long after the original purchase order/schedule is removed.</Paragraph>
		<GeneralSection><SectionTitle>Contents of history files</SectionTitle>
			<List><ListIntro>The purchase order/schedule history files contain:</ListIntro>
				<ListItem>All created purchase order/schedule (line)s. These order/schedule (line)s are the not yet processed order/schedule (line)s.</ListItem>
				<ListItem>All invoiced purchase order/schedule (line)s. These order/schedule (line)s are the processed order/schedule (line)s.</ListItem>
			</List>
			<List><ListIntro>The purchase order/schedule history files are automatically updated when:</ListIntro>
				<ListItem>The purchase orders/schedules are created.</ListItem>
				<ListItem>The purchase orders/schedules are changed. For each change of a purchase order/schedule, a pair of order/schedule history lines are created. The first order/schedule history line is used to remove the original values and the second order/schedule history line is used to record the new values.</ListItem>
				<ListItem>Purchase orders are processed in the <Link href="/baanerp/td/pur/tdpur4223m000" role="session">Process Purchase Orders (tdpur4223m000)</Link> session.</ListItem>
				<ListItem>Purchase schedules are processed in the <Link href="/baanerp/td/pur/tdpur3223m000" role="session">Process Purchase Schedules (tdpur3223m000)</Link> session.</ListItem>
			</List>
		</GeneralSection>
		<GeneralSection><SectionTitle>Clearing history files</SectionTitle>
			<Paragraph>You can restrict the total amount of history data with the <Link href="/baanerp/td/pur/tdpur5201m000" role="session">Archive/Delete Purchase Order/Schedule History (tdpur5201m000)</Link> session.</Paragraph>
			<Paragraph>You must realize that the history files are the base for purchase statistics. If you clear the history files, check if the purchase statistics are fully updated. You cannot fully update the statistics if the history files are cleared before the update.</Paragraph>
		</GeneralSection>
		<Note><SectionTitle>Note</SectionTitle>
			<Paragraph>You cannot modify the history data. It is only used for information purposes.</Paragraph>
		</Note>
	</GeneralSection>
	<RelatedTopics><SectionTitle>Related topics</SectionTitle>
		<RelTopic><Link href="/baanerp/td/onlinemanual/000012" role="manual">To process purchase orders/schedules</Link>
		</RelTopic>
	</RelatedTopics>
</ManualTopic>
