report-wrong o/p

hi all, in the code below am getting a wrong o/p that o/p values are repeated,kindly check n plz help me...

loop at it_docu where awtyp = 'BKPF'.

select AUGBL

INTO TABLE IT1

from bseg

where bukrs = '1000'

and belnr = it_docu-docnr

and gjahr = it_docu-ac_gjahr.

endloop.

delete adjacent duplicates from it1 comparing augbl.

loop at IT1.

write :/ it1-augbl.

endloop.

every helpfull answers will be rewarded