What names have to match for GoZync to work?
The Table Occurrence (TO) name used on in GoZyncMobile has to match the name of the layout for that TO created in GoZyncMobile.
The name of the External Data Source entry for your hosted file needs to match the file's name itself in GoZyncMobile.
The "gzh_" and "gzm_" names of your hosted and mobile table occurrences need to match, though the TO names in your actual files don't need to be the same, of course.
And your field names on both the hosted and mobiles sides need to match, unless you're using custom field mapping.