Web Dispatcher trace file “dev_webdisp” shows the following messages in case of the situation ;

*** ERROR => no valid HTTP destination server available for system ‘<SID>‘ using logon group ‘GroupName’ rc=13 {0000000a} [http_route.c 3369]
*** WARNING => redirect failed request to foreign destination ‘!ALL’ [http_route.c 3393]
*** WARNING => original destination was ‘GroupName’ [http_route.c 3396]

Go to transaction SMLG and if dosen’t exist create the logon group which dev_webdisp trace file refers

Press the “Create Assigment” button  and fill the “Logon Group” and “Instance” informations

For our case “Logon Group” name should be “Public”

Press “Copy” and “Save”

Now go to transaction SICF and “Execute”

Find the path of related service (webgui), for our case /default_host/sap/bc/gui/sap/its

Double click the “Webgui” area and choose the “Load Balance Group” –> Public

Press the “Save” button and restart the SAPWebDispatcher

Finally you shouldnt get that error message anymore…