If you have Oracle Customer Data Librarian (CDL), and your administrator has set up duplicate identification for Customers Online, you can specify in Customers Online which organizations or persons are potential duplicates. Each set of duplicates that you mark is sent to CDL as a merge request.

The data librarian can evaluate your merge request and merge the duplicates into one record, as well as determine how the duplicates' relationships, including contact relationships, are merged. The data librarian can also reject your merge request and retain the merge candidates as independent customer records. See: Merge Requests Overview.

The HZ: Merge Master Party Defaulting profile option determines the default master record, which remains after the other duplicates merge into it. The data librarian can reassign the merge master before the actual merge.