The main purpose in my cynical view is to provide the appearance of transparency.
Slightly less hidden, there's a Dutch organisation called "Veiligheidpercepties.nl". Here they are quite literally saying it's not about safety but the perception of safety.
But okay, at least some document gather tasks will be performed etc. However, the most important thing, associating repercussions on corruption, that's extremely difficult. In the Netherlands it's essentially impossible for certain types of corruption. i.e. the important ones.