31-028 One or more Unicode values specified in the ToUnicode CMap are zero (0).

A ToUnicode CMap maps a code to the Unicode value zero.

Checkpoint

31: Fonts

ISO 14289-1 (PDF/UA-1) clause

7.21.7-2

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 every /ToUnicode map of a font: no destination may contain the code unit U+0000.