Comment 4 for bug 1335618

Right. This isn't technically a bug because it works as it was originally designed, but it would be a nice enhancement (however we'd like to track that). This would prevent the user from causing an error and instead push them to be sure they've entered all of the required criteria before continuing with the creation action.

If we were to apply something like this, I'd really like to see it applied in a way that is consistent across all of Horizon and not just to one modal at a time if possible.