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

31-017 A non-symbolic TrueType font is used for rendering, but none of the cmap entries in the embedded font program is a non-symbolic cmap.

A non-symbolic TrueType font program has no non-symbolic cmap.

Checkpoint
31: Fonts
ISO 14289-1 (PDF/UA-1) clause
7.21.6-1
Test type in the protocol
Machine-testable
Applies to
A single object

How AxisRemedy handles it

Tested by the app. AxisRemedy tests this condition itself. For each document it records passed, failed or not applicable, and for every failure the object and the page.

What the check covers

Tests non-symbolic simple TrueType fonts with an embedded program: it needs a (3,1) or (1,0) cmap subtable.