Hi Arunkumar,
Perhaps you could use standard class CL_RECA_DDIC_DOMA to get the domain values? Method GET_VALUES supplies the values defined within a domain.
CONSTANTS: lc_bstat TYPE string VALUE 'BSTAT'. DATA: lt_values TYPE re_t_rsdomaval . * Get domain values for document status cl_reca_ddic_doma=>get_values( EXPORTING id_name = lc_bstat IMPORTING et_values = lt_values EXCEPTIONS not_found = 1 OTHERS = 2 ). IF sy-subrc <> 0. * MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO * WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4. ENDIF.
Now you can fill your listbox from the internal table LT_VALUES.