Dunning Contact Setup in Customer Master Oracle R12 Advanced Collections

Hello,

We are running Dunnings at Bill to level. I created a contact, added email ID and location address for e.g. '123 Main Street' and assigned 'Dunning' role in Customer Profile at Bill to site level. Then selected the contact on the Organization in the Collections UI and then assigned it as a Dunning Contact with Actions>Dunning Contact.

After running 'IEX: Send Dunnings for Delinquent Customers' program for sending the dunning letters, it printed contact's address '123 Main Street' instead of Bill to address on the Dunning header.  We would like to print Bill to address on the letter header. Could you please advise? Thanks.