<?xml version="1.0" encoding="utf-8"?>
<ManualTopic ID="/baanerp/cp/onlinemanual/000117" xml:lang="en">
   <Header>
      <Title>Component CTP reservations</Title>
      <Keyword type="header" order="d1e204372">
         <Level1>Component CTP reservations</Level1>
      </Keyword>
      <Keyword type="header" order="d1e204375">
         <Level1>CTP</Level1>
         <Level2>reservations</Level2>
      </Keyword>
      <Keyword type="header" order="d1e204380">
         <Level1>ATP</Level1>
         <Level2>CTP reservations</Level2>
      </Keyword>
   </Header>
   <GeneralSection>
      <Paragraph>ERP Enterprise calculates CTP reservations when a plan
		item's ATP is updated, or when an item master plan is updated.</Paragraph>
      <GeneralSection>
         <SectionTitle>Component CTP reservation</SectionTitle>
         <List>
            <ListIntro>ERP Enterprise generates a <Link href="/baanerp/cp/glossary/glossary#000042" role="glossary">component CTP reservation</Link> in
			 the following situation:</ListIntro>
            <ListItem>The <Link href="/baanerp/cp/glossary/glossary#000040" role="glossary">cumulative ATP</Link> of a plan
			 item in a particular plan period becomes negative.</ListItem>
            <ListItem>You selected the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000#cprpd100.coat" role="manual">Component CTP</GUIRef> check box in the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session for the plan item involved.</ListItem>
            <ListItem>You selected the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000#cprpd100.cria" role="manual">Critical in CTP</GUIRef> check box in the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session for (one or more) component items of the plan
			 item.</ListItem>
            <ListItem>You entered a <Link href="/baanerp/td/glossary/glossary#SalesOrder_td" role="glossary">sales order</Link>, and the cumulative ATP of the end item
			 and/or the cumulative ATP of one or more components is not enough.</ListItem>
         </List>
      </GeneralSection>
      <Note>
         <SectionTitle>Note</SectionTitle>
         <Paragraph>When component CTP
		  reservations and/or capacity CTP reservations are made for a plan item, the
		  expected additionally produced quantity of the item itself is stored as CTP
		  reservation receipts.</Paragraph>
      </Note>
      <GeneralSection>
         <SectionTitle>Calculation</SectionTitle>
         <Paragraph>The component CTP
		  reservation is computed as follows:</Paragraph>
         <Formula space-and-orientation="indented-estimated">
            <Paragraph>CCR(t) = -NA(t) x	 RQ(t)</Paragraph>
         </Formula>
         <TABLE border="1" borderstyle="default" space-and-orientation="indented-estimated">
            <TBODY noTR="3">
               <TR no="1" isLast="false">
                  <TD rowspan="1" colspan="1">CCR(t)</TD>
                  <TD rowspan="1" colspan="1">component CTP reservation</TD>
               </TR>
               <TR no="2" isLast="false">
                  <TD rowspan="1" colspan="1">NA(t)</TD>
                  <TD rowspan="1" colspan="1">negative ATP</TD>
               </TR>
               <TR no="3" isLast="true">
                  <TD rowspan="1" colspan="1">RQ(t)</TD>
                  <TD rowspan="1" colspan="1">required quantity</TD>
               </TR>
            </TBODY>
         </TABLE>
         <Paragraph>The requirement date
		  for the component CTP reservation for a critical material is determined as
		  follows:</Paragraph>
         <Formula space-and-orientation="indented-estimated">
            <Paragraph>RD = PFD - LTO</Paragraph>
         </Formula>
         <TABLE border="1" borderstyle="default" space-and-orientation="indented-estimated">
            <TBODY noTR="3">
               <TR no="1" isLast="false">
                  <TD rowspan="1" colspan="1">RD</TD>
                  <TD rowspan="1" colspan="1">requirement date for the component CTP reservation</TD>
               </TR>
               <TR no="2" isLast="false">
                  <TD rowspan="1" colspan="1">PFD</TD>
                  <TD rowspan="1" colspan="1">finish date of the originating plan period</TD>
               </TR>
               <TR no="3" isLast="true">
                  <TD rowspan="1" colspan="1">LTO</TD>
                  <TD rowspan="1" colspan="1">lead-time offset</TD>
               </TR>
            </TBODY>
         </TABLE>
         <Paragraph>ERP Enterprise converts the lead-time offset from workdays
		  to calendar days. See <Link href="/baanerp/cp/onlinemanual/000087" role="manual">Workdays and calendar days in Enterprise Planning</Link>.</Paragraph>
         <Paragraph>ERP Enterprise records the component CTP reservation in the
		  plan period in which the requirement date falls. The component CTP reservations
		  are subtracted from the (component) item's ATP.</Paragraph>
         <Paragraph>You can view component
		  CTP reservations and their origin in the <GUIRef href="/baanerp/cp/rrp/cprrp0111m000" role="session">CTP Reservations (cprrp0111m000)</GUIRef> session. This session is accessible through the <Link href="/baanerp/tc/glossary/glossary#specific" role="glossary">appropriate</Link> menu of the <GUIRef href="/baanerp/cp/rmp/cprmp2101m000" role="session">Item Master Plan (cprmp2101m000)</GUIRef> session.</Paragraph>
      </GeneralSection>
   </GeneralSection>
   <RelatedTopics>
      <SectionTitle>Related topics</SectionTitle>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000037" role="manual">Types of ATP and CTP checks</Link>
      </RelTopic>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000123" role="manual">Component CTP</Link>
      </RelTopic>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000118" role="manual">To compute item ATP</Link>
      </RelTopic>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000116" role="manual">CTP Checking Procedure</Link>
      </RelTopic>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000312" role="manual">Capacity CTP reservations</Link>
      </RelTopic>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000332" role="manual">To compute cumulative ATP</Link>
      </RelTopic>
   </RelatedTopics>
</ManualTopic>