Extended CTP checks

Extended CTP checks are used to explore the possibility of producing an extra quantity of an item, in addition to the existing planning. Extended CTP checks come into play if the standard ATP of a plan item is insufficient to cover a particular demand.

In Enterprise Planning there are two types of extended CTP checks:

  • Component CTP check
  • Capacity CTP check

You can enable or disable these checks in the Items - Planning (cprpd1100m000) session. In the ATP Handling (cprrp4800m000) session, you can temporarily disable particular checks.

Note: 

  • If multisite functionality is active, the checks are performed per planning cluster.

  • The component CTP check ignores the specification, regardless of the value of the Inherit Demand Peg field in the Bill of Material (tibom1110m000) session. LN simply presumes that all of the ATP of the components is available.

  • Component CTP

    A component CTP check for a plan item involves a full CTP check of the components of an item for which you selected the Critical in CTP check box in the Items - Planning (cprpd1100m000) session.

    Depending on the situation and on the item type, LN takes into account one of the following bills to carry out component CTP checks:

    • Bill of critical material (BCM)

      If the item has an item master plan.

    • Bill of material (BOM)

      • If LN carries out the component CTP check in the order horizon.
      • The item is not a generic item.

    • Generic BOM

      If the item is a generic item. LN first configures the ordered item by means of the generic BOM, and then performs a component CTP check by taking into account the components of the customized BOM.

    For each CTP-critical component, a full CTP check is carried out. This check can consist of various types of ATP and CTP checks, based on the settings in the Items - Planning (cprpd1100m000) session. Note that this can result in a multilevel component check, in which LN checks lower-level components as well.

  • Capacity CTP

    A capacity CTP check for a plan item involves a capacity check on each resource in the item's bill of critical capacities that is defined as critical in CTP.

  • Combinations of checks

    Extended CTP checks are cumulative in nature:

    • For items, the cumulative availability in a certain plan period (corrected for future deficiencies) is checked.
    • For resources, the capacity up to and including a certain plan period (corrected for future deficiencies) is checked.

    Because of this cumulative nature, some caution is called for when component and capacity checks are both used for an item. If both checks succeed, this does not necessarily mean that the availability of components and capacity will exactly match in terms of time. After all, some of the available capacity can fall in a plan period in which the necessary components are not yet available.