How to cancel the Sales order in D365


I cancelled the packing slip and tried to cancel the SO, its not letting me to cancel. Getting an error "The quantity cannot be reduced. The number of inventory transactions on order is too low because the quantity or part of it is referenced by an output order or a production order or is marked against other transactions"

I tried to cancel the picked quantity, not letting me to do it. 

I tried to delete the output orders, not letting me to do it.

I tried to unpick it from 'picking list registration, not letting me to do it.

Please suggest me a wok around to cancel the SO.