This report shows a detailed list of transactions by customer. It only includes transactions where the items are received but amount due is not $0. 
 

Enter the criteria you want to generate the report results.  When you generate it, you will see a list of the transactions from your selection criteria. You can click on any of the transactions to take you to each individual transaction. 

There is a selectable column for ‘Aging Days’ that you can turn on/off and sort to help you find the contracts that have not been paid in the longest amount of time.