To do this task
Open the customer's register or your A/R register.
Find all incorrect charges and change the amounts of those charges.
Click Record to save your changes.
Reprint the statement.
In the Select Statements to Print window, make sure that the date range of
the reprinted statement is the same as it was for the original statement.
If you are reprinting a statement for one customer only, select the
One customer option when the Select Statements to Print window is
displayed. Normally, this window is set to print statements for all
Apply credit amounts to
Correct overcharges on statements