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.
Result for language (Q34770)
: 2, : 10, : 4, : 1180, : 42
| Status | Property | Message | Constraint |
|---|---|---|---|
| Wikidata property | The parameter "property" must only have a single value. | inverse constraint | |
| Wikidata property | The parameter "property" must only have a single value. | inverse constraint | |
| equivalent class | This property's value should not be present on any other item, but is also present on language. | distinct-values constraint | |
| NALT ID | This property's value should not be present on any other item, but is also present on language. | distinct-values constraint | |
| said to be the same as | parole should also have the symmetric statement said to be the same as language. | symmetric constraint | |
| Yahoo Answers category ID | This property's value should not be present on any other item, but is also present on language. | distinct-values constraint | |
| category for eponymous categories | Values of category for eponymous categories statements should be instances or subclasses of Wikimedia meta category (or of a subclass of it), but Category:Wikipedia categories named after languages currently isn't. | value-type constraint | |
| WordNet 3.1 Synset ID | This property's value should not be present on any other item, but is also present on language. | distinct-values constraint | |
| topic's main category | Category:Languages sorted alphabetically should also have the inverse statement category's main topic language. | inverse constraint | |
| topic's main category | This property should contain a single “best” value with the same applies to part qualifier. Of the current multiple values, one should be marked with “preferred” rank. | single-best-value constraint | |
| topic's main category | This property's value should not be present on any other item, but is also present on human language. | distinct-values constraint | |
| topic's main category | This property should contain a single “best” value with the same applies to part qualifier. Of the current multiple values, one should be marked with “preferred” rank. | single-best-value constraint | |
| topic's main template | This property should only have a single value with the same set of qualifiers for these properties: | single-value constraint | |
| topic's main template | This property should only have a single value with the same set of qualifiers for these properties: | single-value constraint | |
| topic's main template | This property should only have a single value with the same set of qualifiers for these properties: | single-value constraint | |
| Google Knowledge Graph ID | An entity should not have statements for both Google Knowledge Graph ID and Freebase ID. | conflicts-with constraint |