creation of production order from manual or conversion from Planned Order
i would like to know why does the production finish date differ when we do manual and conversion of planned order into a production order?
When a planned order is created it just uses the Inhouse production time defined to derive the dates, whereas incase of production orders, it would try to schedule the operation and based on that the scheduled dates are derived. The other possibility is the different scheduling types are used for Planned order and Production order. Check transaction OPU5 and OPU3