When any article, news, or any web content is published with an error in any form (be it spelling mistake; wrong venue; wrong time; grammatical error; or any other error), a Corrigendum is written afterwards to specify where the error occured. So Corrigendum is a correction made to a previously published article. Corrigendum is singular and the plural is Corrigenda. Corrigendum is very common in published journals.
Article published after due date
In today's edition, we ran a story on ‘Submitting Medical Claims' in the Just Do It section by mistake.
The last date to submit the medical bills was 07 JULY 2010.
The inconvenience caused is deeply regretted.