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

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
Drupal 7 inline messages module

Drupal 6 (and 7) ife module

Inline Form Errors unofficial and very experimental Backdrop contrib module by @daggerhart:

~~ Advocate for this issue: @klonos ~~
GitHub Issue #:
1040
Recent comments
Yes indeed. We are exploring a few other more costly options, but as we are a low-resource start-up, we could save a lot of money by integrating Backdrop, CiviCRM and Ubercart for our membership...
UberPOS for Backdrop?
Hello Chrys.., It looks like it was for Drupal 6, with a Dev release for D7... Never seen it before, but it looks like an interesting module... Do you have an immediate need...
UberPOS for Backdrop?
I do have the apache status page set up ... I will look in to this really fast. BRB.
Status Report Page throws : Forbidden You don't have permission to access this resource.