Help:Property constraints portal/Citation needed
|This is the documentation page for a particular constraint type. See Help:Property constraints portal for a general overview of property constraints.|
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.
There are several possible ways to address a violation of this constraint:
- 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.
- It’s possible that the statement is a rare, but legitimate exception to the constraint, and nothing should be done.
This constraint does not have any qualifier parameters.