Reschedule Shipment of an Order Line When Back-to-Back Supply Arrives Early vs ORA_DOO_RECOMPUTE_PRO

Summary:

What is the difference between this opt-in "Reschedule Shipment of an Order Line When Back-to-Back Supply Arrives Early" vs the system profile ORA_DOO_RECOMPUTE_PROMISE_DATE - where B2B can be mentioned?

Also, does the scheduled ship date on the sales order only gets updated when the Promised Delivery Date on the corresponding PO line is updated?

What is the corresponding PO line just shows up early and gets received and becomes onhand? will scheduled ship date not get updated.

The opt-in feature should be named as Reschedule Shipment of an Order Line When Back-to-Back Supply scheduled to Arrive