Luminate Online has an optional feature for detecting and manually resolving potential duplicate registrations (when the same person signs up twice, perhaps with a slightly different profile). This feature is enabled by setting the PREDUP_MATCH_ENABLED site attribute to TRUE under Setup -> Site Options -> Data Sync Properties in the Luminate Online administrator interface.

When duplicate detection is enabled, the system checks each new registration for a potential match with existing constituent records. If a potential match is found, the registration is queued for manual resolution by an administrator, who must compare the new and existing registration and decide whether they are different. The interface for resolving registrations is located under Data Management -> Import/Export -> Resolve New Registrations.

Potential matches are not added to constituent partitions, and therefore are never included when downloading new constituent records using the GetIncrementalInserts web service operation. After a potential match is resolved as being distinct from any existing record, it is added to any relevant partitions and made available for download.

If you wish to resolve duplicates outside of the Luminate Online system, simply ensure that the PREDUP_MATCH_ENABLED site attribute is set to FALSE. This will prevent the system from flagging any new registration as a potential duplicate, and ensure that all new registrations (including potential duplicates) are returned by the GetIncrementalInserts web service operation. In this case, it is the responsibility of the client application to remove resolved duplicates from the Luminate Online system.