The Spanish data protection authority is the first in Europe to set up regulations for data protection officer certification schemes. The rules explain in detail what someone will need to demonstrate and do in order to become a DPO in the country.
The Spanish Data Protection Agency (AEPD) has worked with Spain's National Entity of Accreditation and a panel of data protection experts to develop a Spanish DPO certification system. ENAC's role in this is to accredit the certification schemes. This will allow DPOs certified under such schemes to assert that they really know what they're talking about, by showing off their "mark of conformity."
The AEPD published its guidelines