Hi Prabu,
In your output internal table define two more fields of type C.
Before line item display node, create a code node and write logic to indentify the duplicate entries and set the flag on every new pattern.
Ex:
LOOP AT itab ASSIGNING <fs_line>.
AT NEW item_no.
<fs_line>-flag1.
ENDAT.
AT NEW bin.
<fs_line>-flag2.
ENDAT.
ENDLOOP.
While printing the output internal table rows just check these flags to control the duplicate values.
Regards
Praveen