Hi Deven,
Could you give us more details or maybe point out in a screenshot what is not matching? At first, I'd suggest to take a look at the capacity consumptions specified in the PDS/PPM.
Also I'd check whether there are PP/DS orders in the buckets which do not match - if unmatching blocks have PP/DS orders, perhaps these are not consuming capacity at the moment, so quantity in Production Planned figure is higher than shown in capacity view.
Regards,
Tiago