In the portal ESS, when I execute the service My Trips and Expenses, the system generate the message of error.

Fehler bei der Verarbeitung Ihrer Anfrage

Was ist passiert ?

Der Aufruf der URL http://hostaname:port/sap/bc/webdynpro/sap/FITV_POWL_TRIPS wurde aufgrund eines Fehlers abgebrochen.

Was können Sie tun ?

• Im Falle der Abbruchart RABAX_STATE finden Sie im System ZZZ
• in der Transaktion ST22 weitere Informationen bzgl. der Abbruchursache.
• Im Falle der Abbruchart ABORT_MESSAGE_STATE finden Sie auf dem Applikationsserver ZZZZZZZZZZZZZZZZZZZZ
• in der Transaktion SM21 weitere Informationen bzgl. der Abbruchursache.
• Im Falle der Abbruchart ERROR_MESSAGE_STATE können Sie nach weiteren Informationen in der Tracedatei zum Workprozess 18 in der Transaktion ST11 auf dem Applikationsserver ZZZZZZZZZZZZZZZZZZZZZ
• suchen. Unter Umständen ist die Analyse von Tracedateien zu anderen Workprozessen notwendig.
• Fall Sie noch über keine Benutzerkennung verfügen, so wenden Sie sich an Ihren Systemadministrator.

Fehlercode: ICF-IE-http -c: 112 -u: USER-l: S -s: ED2 -i: ZZZZZZZZZZZZZZZZZZZZZ -w: 18 -d: 20140722 -t: 105619 -v: RABAX_STATE -e: OBJECTS_OBJREF_NOT_ASSIGNED_NO -X: 53CCBBE62D101680E10080000A0840EF_53C4CF8A53EB0FC0E10080000A0840EF_1 -x: 53CCBBEC2D101680E10080000A0840EF

HTTP 500 - Internal Server Error

Ihr SAP Internet Communication Framework Team

In the t.code ST22  I found the following DUMP:

Categoría              Error de programación ABAP
Err.tmpo.ejec.         OBJECTS_OBJREF_NOT_ASSIGNED_NO
Excep.                 CX_SY_REF_IS_INITIAL
Programa ABAP          CL_POWL_TABLE_HELPER==========CP
Anwendungskomponente   BC-MUS-POW
Fecha y hora           22.07.2014 10:56:19

Texto breve
     Access via 'NULL' object reference not possible.

¿Qué ha sucedido?
     Error in the ABAP Application Program

     The current ABAP program "CL_POWL_TABLE_HELPER==========CP" had to be
      terminated because it has
     come across a statement that unfortunately cannot be executed.

¿Qué puede hacer?
     Note down which actions and inputs caused the error.

     To process the problem further, contact you SAP system
     administrator.

     Using Transaction ST22 for ABAP Dump Analysis, you can look
     at and manage termination messages, and you can also
     keep them for a long time.

  An exception occurred that is explained in detail below.

  The exception, which is assigned to class 'CX_SY_REF_IS_INITIAL', was not

   caught in

  procedure "RENDER_MESSAGES" "(METHOD)", nor was it propagated by a RAISING

   clause.

  Since the caller of the procedure could not have anticipated that the

  exception would occur, the current program is terminated.

  The reason for the exception is:

  You attempted to use a 'NULL' object reference (points to 'nothing')

  access a component.

  An object reference must point to an object (an instance of a class)

  before it can be used to access components.

  Either the reference was never set or it was set to 'NULL' using the

  CLEAR statement.

   1 METHOD render_messages.

   2

   3   DATA: lr_element TYPE REF TO if_wd_context_element,

   4         l_message_text TYPE string,

   5         ls_msg TYPE symsg,

   6         l_string TYPE string,

   7         lr_query_ref TYPE REF TO data,

   8         lv_index TYPE i,

   9         lv_lines TYPE i,

  10         l_allowed TYPE powl_xflag_ty.

  11    DATA: messages  TYPE if_wd_message_manager=>ty_t_messages,

  12         message   TYPE  if_wd_message_manager=>ty_s_message.

  13

  14   FIELD-SYMBOLS: <fs_msg> TYPE powl_msg_sty.

  15

  16   GET REFERENCE OF ms_current_query INTO lr_query_ref.

  17

>>>> messages = mr_message_manager->get_messages( )."nt_1671725

  19

  20   IF mr_model->has_query_lock( ) NE 'X'.

  21

  22 * if configuration for ignore ALV lock exists proceed with a message of type I

  23     mr_model->read_config_property(

  24      EXPORTING i_property = 'NO_QUERY_ALV_LOCK_NEEDED'

  25      IMPORTING result     = l_allowed