Thanks for the pointer! Unfortunately I have no success using this, please help to spot the error. In our TKB we have setup a test board (named "Testboard"), and I am trying to access it using this authenticated call: http://www.a1community.net/a1net/restapi/vc/boards/id/Testboard@tkb?restapi.session_key=E-1ctzu74jtKpmrdHRDKFgachjBKE34DCe__MEK5T3I. This is the response I receive: <response status="error"><error code="101"><message> Kein(e) board mit angegebener/em dispid vorhanden </message></error></response> The board can be access via Web at http://www.a1community.net/t5/tkb/dashboardpage a single post in this board has this URL: http://www.a1community.net/t5/Testboard/Technischer-Test-bitte-nicht-Antworten-2/ta-p/139194/message-revision/139194:1 Thanks for checking this, best regards, Ernest