string or binary data would be truncated error

I've looked at GeoNet on this issue. I have verified that the published FGDB attributes are the same type and length as the bind::Esri columns in the *.xlsx. I'm running the form thru app v3.1.158 Survey123 Connect v3.1.26
Is there a way to track exactly WHICH attribute is creating this error?
This form was "built" by modifying the setting form_id and submission_URL from the latest hosted feature layer publication and a Survey123 form that previously worked (with old FGDB); I inserted the new FGDB attribute types and lengths and then saved the xlsx; then republished the form