a9c4d876_Customer_Dunning_Letter__DUN___Description
[Field Name] 13 Master Accounts Only [Data Entry] Enter Y to include ONLY Master accounts on this report. Enter N to include all accounts, regardless of whether they are master accounts or not. [Description] 
This feature allows you to get agings for key accounts only. You must set up the accounts as Master accounts in Customer Maintenance. When you select an aging for Master Accounts Only, the report will be limited to just the reports you have set up as Master accounts.
Customer Dunning Letter (DUN)