An adjustment is a transaction that credits or debits a customer's account by changing:
The amount due for a bill, which is currency.
The minutes, tokens, loyalty points, and so on, which are noncurrency.
If you want to work with multiple customer bills or items, you may want to make adjustments on the account level. If you need to adjust one bill or an item on one or two bills, it may be easier to make an adjustment on the bill level.
To review and manage A/R information in Billing Care, you need the appropriate permissions.