Help:Property constraints portal/None of
|This is the documentation page for a particular constraint type. See Help:Property constraints portal for a general overview of property constraints.|
For example, an instance of (P31) statement should never use the values woman (Q467), female (Q6581072), man (Q8441), or male (Q6581097): all humans on Wikidata have the statement , and genders are differentiated via the separate property sex or gender (P21).
The constraint when used on main values is equivalent to a "conflicts-with constraint" with the same property.
If no constraint scope (P4680) is specified, this constraint is checked everywhere.
There are several possible ways to address a violation of this constraint:
- It is possible that the value is erroneous, and another value should be used instead, e. g. human (Q5) plus a separate statement instead of woman (Q467).
- It is possible that the statement is incorrect and should be removed.
- It is possible that the item is a rare, but legitimate exception to the constraint, and nothing should be done.
This constraint has one mandatory parameter: