tcn.lms.element.v1alpha1.Element.Process.ContactManagerSink.DeDuplication(DeDuplication)
DeDuplication defines the deduplication settings for the contact list.
{
"field_type": "DE_DUPLICATION_FIELD_TYPE_PHONE_NUMBER",
"merge_strategy": "DE_DUPLICATION_MERGE_STRATEGY_KEEP_EXISTING_LIST"
}