Hi Jitendra,
I found that you are not able to find the item internal table name inside Exit. Get the Internal table and Program name for Item. Using Field symbol concept, access the value inside Exit as shown below.
"Data Declarations
FIELD-SYMBOLS: <tblgart> TYPE ANY TABLE,
<wa_tblgart> TYPE ANY,
<fs_value_lgart> TYPE ANY,
<fs_value_betrg> TYPE ANY.
DATA: obj_tblTYPE REF TO data."Assign Program and Internal Table as shown below
ASSIGN ('(MP000800)TBLGART[]') TO <tblgart>.
CREATE DATA obj_tblLIKE LINE OF <tblgart>.
ASSIGN obj_tbl->* TO <wa_tblgart>.
"Check Table have initialized
IF <tblgart> IS ASSIGNED.
LOOP AT <tblgart> ASSIGNING <wa_tblgart>.
ASSIGN COMPONENT 'LGART' OF STRUCTURE <wa_tblgart> TO <fs_value_lgart>.
"Check Wage type is initialized
IF <fs_value_lgart> IS ASSIGNED.
"Check Transport/Conveyance Allowance
IF <fs_value_lgart> = '1002'."Write the Logic Here
ENDIF.
ENDIF.
ENDIF.
ENDLOOP.
ENDIF.
Regards
Rajkumar Narasimman