<?xml version="1.0" encoding="utf-8"?>
<ManualTopic ID="/baanerp/cp/onlinemanual/at000300" xml:lang="en">
   <Header>
      <Title>Component CTP and capacity CTP order-based CTP check</Title>
      <Keyword type="header" order="d1e156907">
         <Level1>Component CTP</Level1>
         <Level2>order-based CTP check</Level2>
      </Keyword>
      <Keyword type="header" order="d1e156912">
         <Level1>Order-based CTP check</Level1>
         <Level2>component CTP</Level2>
      </Keyword>
      <Keyword type="header" order="d1e156917">
         <Level1>Capacity CTP</Level1>
         <Level2>order-based CTP check</Level2>
      </Keyword>
      <Keyword type="header" order="d1e156922">
         <Level1>Order-based CTP check</Level1>
         <Level2>capacity CTP</Level2>
      </Keyword>
   </Header>
   <GeneralSection>
      <SectionTitle>Standard items</SectionTitle>
      <List>
         <ListIntro>To calculate the date on which items are required, LN retrieves the
		  lead-time offsets, as follows:</ListIntro>
         <ListItem>The bill of material defines the lead-time offset for the
		  components. In addition to this lead-time offset value, the component is also
		  offset with the inbound and outbound lead-time, the safety time, and the extra
		  lead time.</ListItem>
         <ListItem>LN multiplies the routing operation times and the required quantity to calculate
		  the lead-time offset for the capacity.</ListItem>
      </List>
      <Paragraph>When the required date is determined, the component CTP is
		calculated online for every bucket as specified in the <Link href="/baanerp/cp/rpd/cprpd0100m000#cprpd000.ctpp" role="formfield">Component CTP bucket</Link> field of the <GUIRef href="/baanerp/cp/rpd/cprpd0100m000" role="session">Planning Parameters (cprpd0100m000)</GUIRef> session.</Paragraph>
      <Paragraph>However, the capacity CTP is derived from the resource master
		plan that is based on the plan period buckets as defined in the <GUIRef href="/baanerp/cp/rpd/cprpd4120m000" role="session">Scenario - Periods (cprpd4120m000)</GUIRef> session. As a result, the lead-time offset for
		capacity results in a required date that will fall in a resource master plan
		bucket, after which the available capacity of that bucket is taken.</Paragraph>
      <Note>
         <SectionTitle>Note</SectionTitle>
         <Paragraph>You can specify the critical materials by selecting 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.</Paragraph>
      </Note>
      <Paragraph>In a multilevel bill of material, you can indicate that only the
		lowest level components are critical in CTP. The subassemblies need not be
		selected as critical.</Paragraph>
      <Paragraph>If the only the <Link href="/baanerp/cp/rpd/cprpd1100m000#cprpd100.coat" role="formfield">Component CTP</Link> check box is selected for the
		subassemblies in the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session, the CTP check will not calculate their
		availability. Instead, the CTP checks only perform a lead-time offset for such
		items based on the information in the bill of material. Next, the CTP check
		explodes the critical components and checks the availability of components.
		This enables you to check only the critical materials in the entire product
		structure.</Paragraph>
      <Paragraph>For capacities, the same concept can be applied. If the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000#cprpd100.cria" role="manual">Critical in CTP</GUIRef> check box is selected in the <GUIRef href="/baanerp/cp/rpd/cprpd2100m000" role="session">Resource (cprpd2100m000)</GUIRef> session and the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000#cprpd100.catp" role="manual">Capacity CTP</GUIRef> check box is selected in the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session, the resource’s availability will be checked
		during CTP. This enables you to check only the critical resources in the entire
		product structure.</Paragraph>
   </GeneralSection>
   <GeneralSection>
      <SectionTitle>Generic items</SectionTitle>
      <Paragraph>In case of generic items, the correct materials and capacities
		must be checked based on the chosen options in the product variant. First, the
		user configures the product variant in, for example, the sales order. When the
		user enters the ordered quantity, the CTP for that specific configuration is
		checked.</Paragraph>
      <Paragraph>The generic bill of material is therefore matched against the
		chosen options in order to find the appropriate materials and capacities. This
		action is performed online.</Paragraph>
      <Paragraph>The generic bill of material is exploded, taking into account
		all constraints, which is precisely the same action as when the customized
		product structure is created for the generic item. However, this explosion is
		merely a simulation to find the correct CTP figures. The result of the
		explosion is not stored.</Paragraph>
      <Paragraph>The lead-time offset is determined in the same way as for
		standard items. However, instead of the bill of material lead-time offset
		(LTO), the generic bill of material LTO is used to determine the required date
		for the components. In addition to this LTO value, the component is also offset
		with the inbound and outbound lead-time, the safety time, and the extra
		lead-time.</Paragraph>
   </GeneralSection>
   <GeneralSection ID="cust">
      <SectionTitle>Customized items</SectionTitle>
      <Figure space-and-orientation="indented-estimated">
         <FigIntro>In case of customized items, the ATP and Component CTP are
		  performed first for the customized items, and then for the derived-from item,
		  as illustrated in the following figure:</FigIntro>
         <HTML:IMG xmlns:HTML="http://www.w3.org/TR/REC-html40" width="929" height="604"
                   SRC="../images/tr_graph_at_customized_items.png"
                   alt="[...]"/>
      </Figure>
      <Paragraph>The ATP of the standard-to-order items does not include the ATP
		of the related customized items. As a result, if a standard to order item A has
		a relation to five different customized items, the ATP of all these customized
		items is deducted from the ATP of item A.</Paragraph>
      <Paragraph>This outcome is logical, because when the ATP is checked for one
		of the customized items, the ATP cannot, of course, consume ATP of any of the
		other customized items. ATP can only consume its own ATP and the ATP of the
		derived-from item.</Paragraph>
      <Paragraph>The ATP of the derived-from item (A) is based on the item’s own
		transactions and on-hand stock. The item order plan for this type of item
		enables you to toggle between the item’s transactions and the transactions,
		including all customized items.</Paragraph>
      <Paragraph>Both options provide the ATP for the derived-from item that is
		checked for customized items.</Paragraph>
      <Note>
         <SectionTitle> Note</SectionTitle>
         <Paragraph>This concept of checking ATP/CTP for customized items and the
		  derived-from item is also valid for customized items that are derived from a
		  generic item. In this case, the <Link href="/baanerp/cp/rrp/cprrp0520m000#toggle.item.overview" role="command">Toggle Item View</Link> button in the item order plan is
		  available for the generic item.</Paragraph>
      </Note>
   </GeneralSection>
</ManualTopic>