<?xml version="1.0" encoding="utf-8"?>
<ManualTopic ID="/baanerp/cp/onlinemanual/at000330" xml:lang="en">
   <Header>
      <Title>CTP reservations</Title>
      <Keyword type="header" order="d1e157117">
         <Level1>CTP</Level1>
         <Level2>reservations</Level2>
      </Keyword>
      <Keyword type="header" order="d1e157122">
         <Level1>Reservations</Level1>
         <Level2>CTP</Level2>
      </Keyword>
   </Header>
   <GeneralSection>
      <Paragraph>To prevent the user from promising the same components or
		capacities multiple times, LN can make CTP reservations. This step is required because, when you
		save a sales order, only a planned issue exists for the end item, and not for
		the components and capacities. Therefore, at that moment, the ATP of the
		component and the capacity is not yet decreased, although a part has already
		been promised.</Paragraph>
      <Paragraph>A planned issue for components is made only when you run the
		order-based planning engine. The sales order demand of the end item will be
		exploded through the bill of material and place dependent demand on the
		components or required capacity on the work center.</Paragraph>
      <Paragraph>To overcome the time gap between sales order entry and running
		the order planning, CTP reservations will decrease the ATP of the
		components/capacities immediately when the order is entered. The same is valid
		for master-based planning. Only when the master-based planning engine is run,
		planned issues are made on components and capacities by exploding the
		BCM/BCC.</Paragraph>
      <Paragraph>Creating CTP reservations requires performance. For items with a
		master plan, the recalculation of ATP figures based on these reservations also
		requires performance. If you do not want to create CTP reservations, clear the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000#cprpd100.onat" role="manual">Online ATP Update</GUIRef> check box in the <GUIRef href="/baanerp/cp/rpd/cprpd0100m000" role="session">EP Parameters (cprpd0100m000)</GUIRef> session.</Paragraph>
      <Note>
         <SectionTitle>Note</SectionTitle>
         <Paragraph>If the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000#cprpd100.onat" role="manual">Online ATP Update</GUIRef> check box is selected in the <GUIRef href="/baanerp/cp/rpd/cprpd0100m000" role="session">EP Parameters (cprpd0100m000)</GUIRef> session, CTP reservations for components and
		  capacities are made when you save the original demand to the planned inventory
		  transactions, as shown in the <GUIRef href="/baanerp/wh/inp/whinp1500m000" role="session">Planned Inventory Transactions (whinp1500m000)</GUIRef> session. The original demand can be a
		  sales order, or a sales quotation that exceeds the success percentage. However,
		  for manually entered SFC production orders, CTP reservations are also made for
		  lower level materials. In that case, the SFC order creates the original
		  demand.</Paragraph>
         <Paragraph>CTP reservations are created for the actual scenario only, not
		  for simulation scenarios.</Paragraph>
      </Note>
   </GeneralSection>
</ManualTopic>