Error on calling a BDC from web dynpro while it runs fine through FM.

Question

I have created a function module for calling transaction ima2n using a BDC. This function module runs as intended, if function module is executed using SE37. if I call the same function module from ABAP dynpro view, on some event. I get the below error. I have debugged the function module but it runs fine. If i debug function module and run the BDC in mode "A" then i can see that BDC is performing the intended actions. This is a strange behaviour.. Please help.
ABAP Dynpro Error
Error when processing your request
What has happened?
The URL http://dev.corp.bharatpetroleum.com:8000/sap/bc/webdynpro/sap/zcapex_appln/ was not called due to an error.
Note
The following error text was processed in the system D01 : Exception condition "CREATE_ERROR" raised.
The error occurred on the application server dev_D01_00 and in the work process 0 .
The termination type was: RABAX_STATE
The ABAP call stack was:
Function: TREEV_CREATE_COLUMN_TREE of program SAPLCNT4
Form: TVAR_INIT of program SAPLAIA1
Module: INIT_VARIANTEN_TREE of program SAPLAIA1
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 D01 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 dev_D01_00 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 dev_D01_00 . 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: 100 -u: TESTAUTH32 -l: E -s: D01 -i: dev_D01_00 -w: 0 -d: 20111109 -t: 123625 -v: RABAX_STATE -e: RAISE_EXCEPTION
HTTP 500 - Internal Server Error
Your SAP Internet Communication Framework Team
ST22 Dump screen
User and Transaction
    Client.............. 100
    User................ "TESTAUTH32"
    Language Key........ "E"
    Transaction......... "IMA2N "
    Transactions ID..... "4EB9F7AE3E2403D7E10000000A481584"
    Program............. "SAPLCNT4"
    Screen.............. "SAPLAIA1 0306"
    Screen Line......... 5
    Information on Caller ofr "HTTP" Connection:
    Plug-in Type.......... "HTTP"
    Caller IP............. "10.72.46.106"
    Caller Port........... 8000
    Universal Resource Id. "/sap/bc/webdynpro/sap/zcapex_appln/"
Information on where terminated
    Termination occurred in the ABAP program "SAPLC
     "TREEV_CREATE_COLUMN_TREE".
    The main program was "SAPLAIA1 ".
    In the source code you have the termination poi
    of the (Include) program "LCNT4U74".
Error occurred during batch input processing
Source Code :
                CONTAINER
             CHANGING
                HANDLE
                TREE_CONTROL_NOT_EXISTING
                FAILED
                CREATE_ERROR
                CNTL_SYSTEM_ERROR.
IF NOT TREE_CONTROL_NOT_EXISTING IS INITIAL
   RAISE TREE_CONTROL_NOT_EXISTING.
ELSEIF NOT FAILED IS INITIAL.
   RAISE FAILED.
ELSEIF NOT CREATE_ERROR IS INITIAL.
   -->>>>>>>>>RAISE CREATE_ERROR. " failed on this line
ELSEIF NOT CNTL_SYSTEM_ERROR IS INITIAL.
   RAISE CNTL_SYSTEM_ERROR.
ENDIF.
regards,
Parag Agrawal

Answer 1

Hi,
as BDC is calling screens and in Webdynpro ABAP you cannot use SAP GUI sceeen, you are getting short dump.
Refer CNTL_SYSTEM_ERROR in webservices from r/3 system
Thanks,
Chandra