Some employers think that is useful, but to me, it is completely useless if you don't understand what you have studied, and it is just another line on your CV.

If you are completely fresh to the industry, taking the certificate shows your willingness to study and learn, in order to get the first feet in. However, application of what you have learnt, is very important. If you are already doing compliance work, you will learn more on the job. It is something you can consider, after doing the work for a few years, and you want to refine your understanding/knowledge. If you are doing it, just to show that you have this certificate, don't waste your time or money.