Error while trying to call a ABAP webdynpro appl. as a link on html form

Question

Hi,
  When I am trying to call a ABAP Webdynpro aplication as a link on html form. I get the following error
Error when processing your request
What has happened?
The URL http:///sap/bc/webdynpro/form_ap/ (Path of ABAP webdynpro application) was not called due to an error.
Note
The following error text was processed in the system DRD : Error in Web Dynpro Runtime System
The error occurred on the application server DRD_06 and in the work process 0 .
The termination type was: RABAX_STATE
The ABAP call stack was:
Method: GET_REQUEST_INPLUG_PARAMETERS of program CL_WDR_CLIENT_APPLICATION=====CP
Method: INIT of program CL_WDR_CLIENT_APPLICATION=====CP
Method: IF_WDR_RUNTIME~CREATE of program CL_WDR_MAIN_TASK==============CP
Method: HANDLE_REQUEST of program CL_WDR_CLIENT_ABSTRACT_HTTP===CP
Method: IF_HTTP_EXTENSION~HANDLE_REQUEST of program CL_WDR_MAIN_TASK==============CP
Method: EXECUTE_REQUEST_FROM_MEMORY of program CL_HTTP_SERVER================CP
Function: HTTP_DISPATCH_REQUEST of program SAPLHTTP_RUNTIME
Module: %_HTTP_START of program SAPMHTTP 
What can I do?
If the termination type was RABAX_STATE, then you can find more information on the cause of the termination in the system DRD in transaction ST22.
If the termination type was ABORT_MESSAGE_STATE, then you can find more information on the cause of the termination on the application server DRD_06 in transaction SM21.
If the termination type was ERROR_MESSAGE_STATE, then you can search for more information in the trace file for the work process 0 in transaction ST11 on the application server DRD_06 . In some situations, you may also need to analyze the trace files of other work processes.
If you do not yet have a user ID, contact your system administrator.
Error code: ICF-IE-http -c: 102 -u:  -l: E -s: DRD -i: DRD06 -w: 0 -d: 20081002 -t: 032939 -v: RABAX_STATE -e: UNCAUGHT_EXCEPTION
HTTP 500 - Internal Server Error
Your SAP Internet Communication Framework Team
Any help will be greatly appreciated.
Thanks
RM

Answer 1

RM,
url clearly shows that it is unable to get host and port.check how you are building that url in html page
Thanks
Bala Duvvuri