To be more specific, what I'm told is that there is an error rate. In my opinion, a percentage between 10% and 40% is quite alarming. I would be concerned. What I'm told is that the error rate in fact concerns criminal offences in which fingerprints have been taken, not those where fingerprints are not taken.
However, what I find surprising is that, since the system has been in place, there have been no tools for assessing the error rate. No cost-benefit report has been issued. There's no oversight to measure the rate of non-entry in the repository. No report has ever been prepared. I find it quite surprising that there has been no evaluation report.