"SOLTunnelIdentification" . "2021-09-13"^^ . "1.2.1.0.5.2" . . "OPSidingTunnelIdentification" . "3.2.3" . "1.1.1.1.8.2" . "OPTrackTunnelIdentification" . . . "1.2.2.0.5.2" . "Tunnel identification"@en . "2021-08-03"^^ . . "Unique tunnel identification or unique number within Member State."@en . "stable" . . . .