I have had to write a review of an interview, as the article's author has not given me permission to fully reprint it (I did ask, they didn't respond). I have instead quoted from the article and written my own related padding around it.
However, the original article contains a factual error. The published sentence reads 'This person joined the club in 2000.' when the person who joined tells me that it was 2003, not 2000. As this person is a client, I want to respond to their wishes and publish true information about them. On the other hand, it is bad form to simply retroactively change dates and times when the original has already been published.
Would the correct course of action be 'joined in 2000 [sic: the person has stated this is meant to read 2003]', '... 2000 [/Person has now corrected this to read 2003./]' or '... 2000 [sic]' with a footnote that says 'Original article contained incorrect date. Person joined the club in 2003.'
Any help is appreciated as I'm not sure what works best. It is magazine copy rather than academic so referencing and formatting aren't paramount but I'd like to follow best practice.