The DPO should be given the opportunity to develop his/her skills. This could include the possibility to obtain certification as privacy professional.
The most relevant certification at this stage would be the one provided by the International Association of Privacy Professionals (IAPP), which offers various privacy professional certifications, including Certified Information Privacy Professional (CIPP) and Certified Information Privacy Professional/Information Technology (CIPP/IT). An EU specific certification will be offered in the near future.