In this article we propose innovative methods for the data validation aiming at controlling the relevance, the accuracy and the comparability of the data. These methods apply a systematic approach based on data driven visualisations and interactive reporting. We propose a modern and systematic approach that allows for a precise evaluation of the data and most importantly leaves the possibility to the users to explore the data and understand the reported errors, rather than dealing with a fixed output. The work is presented in the context of the financial accounts domain, however it can be easily generalised to other domains.