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Bug
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Resolution: Done
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High
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None
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None
This is very similar to https://jira.nypl.org/browse/SIMPLY-2353 and the solution is also similar. We have a unique index on (external_identifier_id, library_id, key) but if external_identifier_id and/or library_id are null, the constraint isn't enforced.
There's a slim chance this will help us with https://jira.nypl.org/browse/SIMPLY-2983.