On the Survey123 mobile app I am getting the error below when submitting a survey. This survey was created in Survey123 Connect based on a feature layer.

The AGOL folder contents for this survey and feature layer and views looks like this:

And the fields in the feature layer look like this:

I have also attached the xls form containing all the questions.
Any pointers on what is happening here? I have not been able to find any help for this particular error online.
Thanks!