About exception class CX_TPDA_SYS_SYMB_FSUNASSIGNED

Can any tell me how to use this exception class.
I try to use this exception class to catch unassign exception when using field symbol. But failed.Is there a way to catch unassign exception of field symbol?
Thanks
DATA: int TYPE I.
FIELD-SYMBOL: <int> TYPE I.
DATA: r_exception TYPE REF TO CX_TPDA_SYS_SYMB_FSUNASSIGNED.
TRY.
<int> = 1.
CATCH CX_TPDA_SYS_SYMB_FSUNASSIGNED INTO r_exception.
ENDTRA.
When execute <int> = 1.ABAP dumps occurs.

Hi Chris,
it seems that the exception of using an unassigned field symbol is not catchable. I've tried out your example and replaced the class after CATCH statement with main exception class cx_root. Even cx_root is not able to catch this exception.
I recommend that you avoid this situation by using code like this:
IF <int> IS ASSIGNED.
<int> = some_value.
ELSE.
RAISE EXCEPTION your_exception.
ENDIF.
Hope this helps!
Regards
Mark-André

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hehe
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Hi all ..
In class i have raised one exception
when i catch this exception in my program i m able to get the
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when i raise the exception ...
i have raised like this
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Hello Jayakumar
Usually the attributes of standard exception classes are defines as <b>public</b> and <b>read-only</b>. Thus, you should be able to use the following coding:
DATA:
go_error   TYPE REF TO cx_bapi_error. " specific exception class !!!
TRY.
RAISE EXCEPTION TYPE cx_bapi_error
EXPORTING
textid = cx_bapi_error=>cx_bo_error
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Regards
Uwe

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HI Uwe,
Thanks,
This is my sample code:
This is the first method on the tree:
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INSERT (lt_table_name) FROM <ls_obj>.
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About exception class CX_TPDA_SYS_SYMB_FSUNASSIGNED

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