Dunning Wizard 
The dunning wizard enables you to create and send letters to customers that have not paid their debts before a specific due date and to remind them of their overdue payments. It allows you to automatically post service invoices for interest or fees charged with each dunning letter.
In addition, the dunning wizard keeps track of a customer’s "payment behavior" in the database to deliver this important information to appropriate organizations.
The dunning wizard considers the following transactions and documents:
Open A/R invoices (including partially paid and partially credited)
A/R credit memos
Manual journal entries with at least one row posted to a customer
Opening and closing balance transactions
Incoming payments that are not based on invoices
To access the wizard, choose 
Sales – A/R 
Dunning Wizard 
.
More Information
Dunning Wizard, Step 1: Wizard Options
Dunning Wizard, Step 2: General Parameters
Dunning Wizard, Step 3: Business Partners – Selection Criteria
Dunning Wizard, Step 4: Document Parameters
Dunning Wizard, Step 5: Recommendation Report
Dunning Wizard, Step 6: Recommended Service Invoices