Greetings, maybe I hit another small glitch:
1) I have a long list of distinct Sheet Names, but some of them have more than 31 characters 2) when adding new sheets to the workbook, it looks like exceeding characters are cut of silently from the sheet name 3) thus failing, when cutting of the characters makes the sheet name non distinct This behaviour is at least confusing, when you generate Sheet Names from a database query. I spent the half last night looking for any duplicates in the query itself and it took me a long time to figure out what actually happened. So maybe, present a warning when cutting off sheet names and maybe a severe exception, when cutting off the sheet name will collide with an existing sheet? If you agree on this approach, I would be able to craft a PR -- and fulfil my dream of contributing to POI finally :-) Warm regards Andreas
