HI Habala,
Please try this
SELECT SINGLE BELNR FROM BKPF – sy-subrc = 4, nothing found, but there is an document with AWKEY 1352000016CSAH2013
INTO LV_BELNR
WHERE AWKEY LIKELV_AWKEY
AND BUKRS EQ LS_GLPCW-RBUKRS
AND GJAHR EQ LS_GLPCW-REFRYEAR.
First where condition should be not 'EQ' it should be 'LIKE'
Thanks
Siva