Help:CS1 errors

This help page is a how-to guide.

It details processes or procedures of some aspect(s) of Wikipedia's norms and practices. It is not one of Wikipedia's policies or guidelines, as it has not been thoroughly vetted by the community.

This page describes the error messages reported by the Citation Style 1 and Citation Style 2 citations, what they mean, and how editors might resolve the errors. Category:CS1 errors is the general errors category and Category:CS1 maintenance is the general maintenance category.

Errors issued by Wikipedia's <ref> system, in which citation templates are typically embedded, can be found at Help:Cite errors.