Aditi,
Scenario is a bit vague.
While creation of a planned order through interface (MII),
What are the source and destination systems of the MII planned order creation interface? Exactly what data is being exchanged?
When the plan order is created manually this issue isn't observed.
Created manually in which system?
Also, is your master data (material masters, boms, routings, production versions, etc etc) created in ECC and CIFd to APO? or....?
Best Regards,
DB49