Applying credits
Depending on the bill type, you can manually apply credits on an account to unpaid
charges. For some bill types, you can manually apply credits to charges for any bill type.
For other bill types you can only apply credits to charges for the same bill type, or you
cannot manually apply credits.
If you are applying credits on an aggregate master account, you can also apply them to charges on the sub accounts.
Note: For CDR accounts, you can also use the associated application InfoViewers to apply
credits.