The XLSForm standard supports a 'search()' function which can be used to populate select lists from csv files XLSForm.org . I have tried re-creating in Survey123 the simple sample from the XLSForm page, but I haven't been able to get it to work. Instead of the select list being populated with data from the csv file, there is a single select option that is the name of the label field in the csv file.
I can't tell if its something I am doing wrong or if its functionality that Survey123 doesn't support. If Survey123 does not support that functionality, is there a way that i can use data from csv files to populate select lists?