This flag should be checked for articles that have examples that have errors—that is, the example wouldn’t work correctly. You may use the associated editorial block to describe the problem if you wish.
Manual of Style
TODO: Figure out which piece of Manual of Style this relates to
Once all examples on the page work correctly you may remove this flag.
You may use the associated editorial block to provide additional context on what examples are necessary: Template:Editorial/Examples_Errors.
The editorial block should be as close to the content with problems as possible. If that’s not possible (for example because the problem pieces are in a rigidly-structured part of the page), then put it in the Editorial Block at the top of the page.