Admissibility – Substantive requirement: identification of relevant legal grounds
Article(s) involved (national, EU, or other): Article 77, 80 GDPR
Some SAs refuse a complaint if the legal grounds for such a complaint are not identified.
The provisions should prohibit to ask to specify legal grounds as the complainant might not be in a position to identify them and does not have the legal expertise to do so.
The formal threshold is not defined in the GDPR. It seems that Concept 2 ensures that the national law of the filing SA is relevant for any rules on the admissability of the law and other SAs may not review the admissability and require such additional elements.