This is probably a niche case and extremely pedantic. It may not warrant any action, so bear with me.
I have a device with a group of seven checkbox controls where I am requiring users to select at least two of them. It doesn't matter which two. When returning the error message dict, it doesn't seem like good UX design to highlight all of the controls or all the unselected controls, so instead I plan to highlight the label for the group (an alternative would be to highlight nothing at all and rely solely on the 'showAlertText' dialog). Regardless, the config UI returns the expected "Error validating fields. Hover over the red field labels above to see the error reason." on error.
In this case, the error message isn't technically associated with a field label, or nothing is highlighted red if I go just with the alert dialog. So I would suggest the device config dialog alert message be changed slightly to something like: "Error validating fields. Hover over any red label(s) above to see the error reason." (or something like that), which would be more inclusive of potential conditions within the config dialog.