Constraint report

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This special page performs constraint checks on any entity you want. The entities are fetched from the live system, so every constraint violation you fix there will be instantly removed from this list.

The constraints are parsed from statements on properties each time those statements are edited, usually within a few minutes.

Check constraints for entity

Result for Q11516276 (Q11516276)

: 2, : 199

StatusPropertyMessageConstraint
ISBN publisher prefixEntities using the ISBN publisher prefix property should be instances of publisher or human (or of a subclass of them), but Q11516276 currently isn't.subject type constraint
Corporate Number (Japan)An entity with Corporate Number (Japan) should also have a statement legal form.item-requires-statement constraint