SC failure for data without caption

Hi,

Do you consider having a data table without a caption as a WCAG success 
criteria failure ?

There is the h39 technique 
http://www.w3.org/TR/2014/NOTE-WCAG20-TECHS-20140408/H39 related to 1.3.1
but has I read it, it doesn't always ask for caption but only when 
caption are provided in the presentation (cf description of the technique)

And you what do you think ?

Regards,

-- 
Aurélien Levy
----
Temesis