The Code of Civil Procedure is based, inter alia, on the principle of availability. This principle means that the parties to the proceedings are free to undertake procedural actions and revoke them. This entitlement is limited in judicial proceedings by the control of such action. These checks are taken by the court. The scope of this audit is broader with regard to the dysfunctional activities undertaken by the employee, the insured in matters of labor law and social security. It seems that it is too wide, especially with respect to appeals against judicial decisions. This review is doubtful as to the fact that the authority that issued the specific judgment has to assess the admissibility of the withdrawal of the appeal against such a ruling.