Eliminate redundant counting of clients
On the Itemization tab, sort the list by Client Name and search for the use of host name aliases. Look for instances where the itemization table lists the same client multiple times under the same policy but with a different host name alias. If that occurs, zero out the Charged Size column for the lines with an earlier backup date. Add a note to the Enter a Reason here when modifying the Charged Size column explaining why the Charged Size value is zero.
For some Oracle RAC backups, the presence of itemizations under different aliases can reflect the backup of different data sets. If you zero out the Charged Size the protected data is under counted.
If a client is found in more than one policy, confirm that those policies do not have overlapping backup selections. If the backup selections overlap, find the redundant backup policies in the Itemization tab. Make adjustments to the Charged Size value. Decrement the size by the value of the redundant backup selection and add a comment within the adjacent Reason cell.