Availability Check in planned Order & Production Order

Dear All,

How can I achieve the same Availability Check (missing Parts ) output in Planned Order & Production Order.

Currently in Availability check in Planned Order is bit different in the sense, I have the Component in Stock without any reservation. But in Planned Order it shows in Missing part.

But if I convert this Planned Order to Production Order, it is not visible in Missing parts which is correct.

I want to have the same missing part report for both Planned Order & Production Order.

Thanks

Regards'

Raghu