with CE certificate without BKF training?

Moin I have a question, I have just made my FS Kl. CE and paid myself, because I have actually nothing with truck on my hat. Since (I think) 2009 or 2010 a kind of training (BKF training) is necessary besides the driver’s license over several 100 hours to drive commercially. What happens if I have not done this training and I find a company, which I still drive commercially. Is this driving without a driving license? An Owi? Or tax evasion? Erli Does this mean insurance coverage? If someone could answer me without obligation, I would be very grateful Greeting