This is part of #378 as it is now a feature included in D8 core (d.org issue):

screen shot 2018-10-28 at 10 16 15 am

This was something that tested really well on the D8 UX study, and we should consider adding to Backdrop as well.

User interface changes

  • Form validation error messages are displayed below the respective form fields that have triggered them.
  • A brief indication of the number of errors, and a link to each error is displayed in the messages area at the top of the page.

Contrib modules

~~ Advocate for this issue: @klonos ~~

GitHub Link: 
https://github.com/backdrop/backdrop-issues/issues/1040
GitHub Issue #: 
1040