Clarifications on Dunning Letters

Hi All,

We have a situation and we are looking for some clarifications here.

We have set the minimum dunning amount for a customer as $3.

The customer has an old open Credit Memo of $2000 (say 01-Apr-2018).

We got a new invoice of $100 on 01-Sep-2018 (payment term - immediate). No payment has been received for the invoice and the invoices has not been applied to the credit Memo .i.e, the Invoice is outstanding and open in the system.

As per Dunning Plan (staged dunning),     1st dunning letter should go 4 days from the due date.

                                                                   2nd dunning letter should go 10 days from the dunning letter 1 generation date