From 
Accessed from the Sales Invoicing Reports menu
, The Aged Debtors Report provides details of transactions recorded against each Debtor/Client. The report displays the Invoices and Credits along with the original value of each transaction. It also displays the value remaining unpaid and the "aged" period to which it belongs.
Profit Centres
It is possible to choose to print this report for either all Profit Centres (by leaving the fields as they are), for a range of Profit Centres (by specifying that range) or for a specific Profit Centre (by setting the start and end of the range as the same Profit Centre).
Account Codes
It is possible to choose to print this report for either all Account Codes (by leaving the fields as they are), for a range of Account Codes (by specifying that range), or for a specific Account Codes (by setting the start and end of the range as the same Account Codes).
Period
Select the Period for which this report is required.
Overdue Periods
Select the number of Overdue Periods to be displayed.
Outstanding Only
If this field is checked, the transactions listed are limited to those which still have an unpaid balance. If it is left blank, all transactions will be included on the report (within the limits of other selection criteria which may have been set).
Updated Only
Include only invoices with this status
Exclude Futures
Exclude invoices relating to a future period.
Reports
Select the Crystal report you wish to run.