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2085694 - Runtime error OBJECTS_OBJREF_NOT_ASSIGNED while accessing Alert Inbox

Symptom

You receive following short dump when accessing the Alert Inbox.

Category               ABAP Programming Error
Runtime Errors         OBJECTS_OBJREF_NOT_ASSIGNED
Except.                CX_SY_REF_IS_INITIAL
ABAP Program           CL_POWL_TABLE_HELPER==========CP
Application Component  CA-GTF-SGF-POW

Short text
     Access via 'NULL' object reference not possible.

 What happened?
     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.
....

Error analysis
    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 "PREPARE_ACTION" "(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 (variable: "ME->MR_ALV_MODEL").
    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.


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Environment

SAP SOLUTION MANAGER 7.1

Product

SAP Solution Manager 7.1

Keywords

dump, alert inbox, powl, technical monitoring, "OBJECTS_OBJREF_NOT_ASSIGNED", "CX_SY_REF_IS_INITIAL",  "CL_POWL_TABLE_HELPER==========CP", "CL_POWL_TABLE_HELPER==========CM009",     "PREPARE_ACTION"   , KBA , SV-SMG-MON-ALR , Monitoring/Alerting/Reporting Infrastructure , SV-SMG-MON-SYS , System Monitoring , CA-GTF-SGF-POW , Please use component BC-MUS-POW , BC-MUS-POW , Personal Object Worklist , Problem

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