When a player chooses a station as next target, a TargetIQ is sent. It contains information about the target id, the round, the chosen type of ticket and whether this target is final or just a suggestion (in praxis it's always final, since the possibility to make suggestions was removed from the Client app).

Request from Client to Service:

 <iq id="mobilis_136" to="mobilis@mobilis.de/MobilisXHunt_v3#1" from="xhunt01@mobilis.de/MXA" type="set">
    <TargetRequest>
       <StationId>18</stationid>
       <Round>2</round>
       <TicketId>4</ticketid>
       <IsFinal>true</isfinal>
    </targetrequest>
 </iq>

Response from Service to Client:

 <iq id="mobilis_136" from="xhunt01@mobilis.de/MXA" to="mobilis@mobilis.de/MobilisXHunt_v3#1" type="0">
    <TargetResponse>
       <StationId>18</stationid>
       <Round>2</round>
       <TicketId>4</ticketid>
       <IsFinal>true</isfinal>
    </targetresponse>
 </iq>

Up: XHunt Communication Structure