This is not the final website. It is a demo of the real tool working, made for Y Combinator.
AxisRemedy

16-001 List is an ordered list, but no value for the ListNumbering attribute is present.

An ordered list has no ListNumbering value.

Checkpoint
16: Lists
ISO 14289-1 (PDF/UA-1) clause
7.6-1
Test type in the protocol
Needs a human judgement
Applies to
A single object

How AxisRemedy handles it

Left for you, with screening. A person has to judge this one. AxisRemedy looks for signs of a problem and lists the places to look at, with the page and a box around the spot. It never reports a pass or a fail for this condition.

Repairs that target it

Repairs are optional. The few that could change how a page looks, such as embedding a missing font, need your explicit consent.