After upgrading to last Central version (2024.3), I get an error message when I upload a new form (another version of an existing form in the project) :
I achieved to make it work by renaming the external file to a new one (not already used in another form)
Thanks a lot for this release !
And best wishes for 2025 
Hi Mathieu,
Do you have any unused choices in the Form? Recently we have made a change where we process all choices even if they are not used by any question. The error in the screenshot is shown whenever there is a choice list and a select from external file with the same name, I have attached a small Form that shows this scenario:
duplicateInstance.xlsx (575.7 KB)
If this is not true in your case, then I would like to see your Form.
