In this configuration activity we are able to define dunning block reasons. They are used to exclude customer or particular customer items to be dunned.
IMG Path: Financial Accounting (New) -> Accounts Receivable and Accounts Payable -> Business Transactions -> Dunning -> Basic Settings for Dunning -> Define Dunning Areas
Tables: T040S, T040T
When you start the transaction by IMG Path, you will get following selection screen. Double click on whatever you like, both will forward you on the same place.
In the main screen of the transaction you will get a list of all dunning block reasons. Maintenance is from here and there is no detailed screen with more fields.