Google Code-in

See https://phabricator.wikimedia.org/T118081

Each of the subtemplates of Template:BillboardID responds with "Illegal name entered" if the name that an editor types is not listed in the template, but there does not appear to be a tracking category associated with this error message. A change in error-detection in the citation templates is placing these instances of the template in Category:Pages with URL errors, but that is a noisy category. The task is to create a tracking category that corresponds to "Illegal name entered" errors.

See https://en.wikipedia.org/wiki/Template_talk:BillboardID

After you have claimed this task, any communication MUST happen either in https://phabricator.wikimedia.org/T118081 with Jonesey95, or on the "Talk" page of https://en.wikipedia.org/wiki/User:Jonesey95 . Jonesey95 is the actual mentor of this task who will help you and who will review your work.