Person profile does not have Source System ID and Source System Owner

Summary:

Hi Expert,

i have query simple for get source_system_id and source_system_owner from person profile/talent profile like below

SELECT pi.profile_item_id, hikm.source_system_id, hikm.source_system_owner

 FROM hrt_profile_items pi, hrc_integration_key_map hikm

 WHERE   pi.profile_item_id = hikm.surrogate_id(+)

    AND hikm.object_name(+) = 'ProfileItem'

    AND hikm.source_system_id IS NULL;

but there are some personal profile data that don't have source system id and source_system_owner.

even though I need the data to update the person profile data using HDL.

are any of you experiencing the same problem?