De or het documentherkenning?

The correct Dutch article is:

de documentherkenning

Rule Words ending in -ing: almost always de. See the rule

How to use documentherkenning

the documentherkenningde documentherkenning
this documentherkenningdeze documentherkenning
that documentherkenningdie documentherkenning
our documentherkenningonze documentherkenning
your documentherkenningjouw documentherkenning
every documentherkenningelke documentherkenning
which documentherkenning?welke documentherkenning?
a big documentherkenning / the big documentherkenningeen grote documentherkenning, de grote documentherkenning