Why am I getting an error about "allow_choice_duplicates" when converting my form?

What that this means?
ODK XLSForm Offline Errors:
There does not seem to be a allow_choice_duplicates column header defined in your settings sheet. You must have set allow_choice_duplicates setting in your settings sheet to have duplicate choice list names in your choices sheet

Hi @diniero69
You need to add that allow_choice_duplicates column in settings sheet here you can find sample https://xlsform.org/en/#choice-names