Vollis

Without knowing more, my guess is that the article from which you copied used an infobox formula that was once independent, but has meanwhile been merged into the Wikidata formula. I recognise that this can be timewasting, and (in case I was the one that did the merge, which is likely) I apologise. I do it tentatively, leaving time for others to say "No, leave the old box active!" -- but if there's no such response, I then need to ask a bot to delete the unwanted parameters from affected pages, so as not to confuse later editors.