Need by Date or Promised Date

Hi Experts,

Which Date is considered for Suggesting ASCP  reschedule exceptions for Purchase orders.

Is it Need by Date or Promised Date?

We observed that, its the promised Date and not the Need by Date which is considered by ASCP for Reschedule in and out recommendations.

But if we release that recommendation, it actually updates the 'Need by Date' in the PO line in EBS. Also, if planned order is released, it creates PO line with only Need by Date in EBS & No promise Date.

The profile option is set to  - MSC:Purchase Order Dock Date Calculation Preference = Promised Date.