Help:Property constraints portal/Citation needed/zh

This is the documentation page for a particular constraint type. See Help:Property constraints portal for a general overview of property constraints.

citation needed constraint (Q54554025) specifies that statements for a certain property should have at least one reference. For example, this could be used on properties likely to be challenged.

It doesn’t matter what the references look like, as long as at least one reference exists.

This constraint can only be checked on the main value of a statement; if any other constraint scope (P4680) is specified, an error is reported.

可能的动作

有幾種方法可以解決違反此約束的問題：

The most likely case is that a reference should be added. See Help:Sources for when and how to add references. For properties using this constraint, it's unlikely that the mere addition of imported from Wikimedia project (P143) is considered sufficient.
有可能此声明是一个罕见，但正确的約束例外，无需采取任何行动。

此约束不含任何修饰符参数。