ATP Time-phased calculation

If you only want to check ATP for a plan item without performing component CTP, capacity CTP, and channel ATP, the calculation is based on the order plan of the item.

The detailed transactions of the plan item are used to see exactly when ATP is created. Therefore, this calculation is not a bucket-based calculation, but a time-phased calculation.

Whether the plan item has a master plan or not is irrelevant. In both situations, the previous detailed time-phased calculation is used, in the order horizon as well as in the planning horizon. Therefore, in this case, no difference exists between order-based and master-based checks.

To achieve this type of calculation, specify the following in the Items - Planning (cprpd1100m000) session:

  1. Select the Online ATP Update check box
  2. Clear the Capacity CTP check box
  3. Clear the Component CTP check box
  4. Clear the Channel ATP check box

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