Single year citation appears as multiple citation (e.g. Fuller, 2005 appears as Fuller, 2005a)
I have a problem with citations that appear as a multiple when they are a single publication by that author in a particular year. (e.g. Fuller, 2003, appears as Fuller 2003a). I am editing a large document (PhD thesis), and it is going to be huge hassle to have so many of these appearing in the text. Can you suggest a remedy?
One tip: in the left pane you can see "collection" named Duplicate Items
If you use group collections you have to check them too. It is my typical mistake to cite the same document when I collaborate on paper with my colleagues. In this case, I very often cite documents from my "personal" library, but my colleagues cite the same documents from group library and then we have this document twice in the paper.
Also, thanks LiborA for the advice about merging rather than deleting duplicates
Merge all duplicities, refresh and check your document. If you still have duplicity in your bibliography then you have cited the same document from different libraries. That is a problem because you cannot merge documents from different libraries, I think. In this case, you have to find all affected citation in your document and change it.
more often then not, this is caused by works by the same author, who is entered differently (e.g. Adam Smith vs. Adam S. Smith vs. A. S. Smith) in Zotero.