|hoo added subscribers: Lydia_Pintscher, hoo.|
hoo added a project: MediaWiki-extensions-WikibaseRepository.
hoo added a comment.
Probably a duplicate of T44325: Prevent creation of items having the same sitelinks (duplicates).
If you submit the form twice, you will get two Items… the data for the constraint checks is being put in place asynchronously some time after the Item has been created, this (most likely) wont happen by the time the second post request is being handled.
Cc: hoo, Lydia_Pintscher, Nikki, Aklapper, D3r1ck01, Izno, Wikidata-bugs, aude, Mbch331
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