The scope of the current document is the analysis of the electronic Mandate systems and data models of six selected pioneer Member States: Austria, Belgium, Finland, The Netherlands, Spain and Portugal. This desk research seeks to determine which types of Mandates are used; how the Mandates are defined, collected and used to grant access to the public service applications; what types of representations are supported; if there are commonalities and differences between MS regarding both the semantic and legal dimensions; and the needs of MS to facilitate the federation of their information sources, taking into account all the interoperability layers.