Board Thread:Wiki Discussions and Support/@comment-3279282-20150202193413/@comment-4271790-20150202194101

Usually, the databooks are corrected when they contradict the manga. For instance, Danzo was not listed as a user of the summoning technique in the databook, yet he used it in the manga, therefore, the databook was corrected. Or another instance, when the databook only listed Madara as a user of the Complete Body - Susanoo, when we know that Sasuke, Kakashi and Indra also used it in the manga. Or Mu not being listed as a Water Release user in the databook when he uses a technique that is said to manipulate water in the manga. We correct the databook and what it states when it contradicts the manga. As for correcting the manga itself, I cannot think of good examples at this instant, but it does feel like these days, the databook in some cases even overrules the manga (Maybe Fire and Blaze?).