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If you locate a duplicate that was not flagged by the system, you can add a general note with the information; a general note to on any record in ISNI triggers an email query to the ISNI Quality Team.
These 2 records below (both assigned) are duplicate, duplicates; several bibliographies confirm that the two names represent the same person, but they are not flagged by the ISNI system.
In any either of the two records you can add a general note to notify the Quality Team about the situation and request a merge:
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