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What is difference between mergedWith and rootPersonId

rootPersonId is added by Identity Sync and refers to the identity on origin server. mergeWith is used to refer to parent of merged face identities.


mergedWith indicates the record is a child of another record.

  • The parent record will have hasMergedPeople=true

rootPersonId indicates the person ID on an origin server that a record was sync’ed from

  • You will always see this on destination sync servers
  • This parameter will also be added on origin server when record created without image (i.e. thru ""Add"" button i Person window)
  • If rootPersonId is not present, then it is equal to the personId

Absence of rootPersonId is not unusual.
  • When absent, rootPersonId is assumed to have the same value as personId of the root person record.
  • When rootPersonId is present in a record, all records merged with it will have it.
  • To omit duplicates (child records), any person record with mergedWith property should be omitted.

Note about events and rootPersonId: Every event that matches a person has rootPersonId which is unique id per identity (not face) and can be easily used to identify unique individuals.