Error when deploying a form

The name column for the cf27y48 contains these duplicates ‘-’
Allow choice duplicates
I tried to fix it but couldn’t

@mariamatabani, have you validated your XLSForm through this online validator? The online validator should help you identify syntax issues if any present.

Yes I have, and the same message appear to me.
Error: The name column for the ‘cf27y48’ choice list contains these duplicates: ‘_’. Duplicate names will be impossible to identify in analysis unless a previous value in a cascading select differentiates them. If this is intentional, you can set the allow_choice_duplicates setting to ‘yes’. Learn more:

I tried to do it from xls form but nothing change and honestly I don’t know much about using the xls form.
I am asking if I can fix this directly from kobo tool box

@mariamatabani, you should be able to resolve your issue by following this community post discussed previously: