Deploying works on kobotoolbox, but not editing

Hello,
I can see that other people had the same problems as me , but couldn’t find the solution in the forum. I have this message when I want to edit the form:

" [Error message seen: Cascading choices can only reference one choice list]. "

I can deploy my form and preview it, but I cannot modify the form on the website Kobo ( and modifying the excel file is much more complicated).

Thank you for your help,

Natacha

Welcome to the community, @nfo_fo! It seems like it’s an issue with the cascading select question type. Have you validated your XLSForm through this online validator? Validating there should help you identify syntax issues if any present.

Thank you very much!
Yes I already tried it, but there are no comments at all.
I’m a bit surprised because I do the same survey every year and it’s the same form as last year, so it should work. Thank you very much for your help.

You can find my form here ( I work on xlsx and then convert it in XLS):