Mustafa,
Ok. Import the enclosed file in your LSMW and create a excel sheet like below:
BLDAT C(008) Document Date
BLART C(002) Document Type
BUKRS C(004) Company Code
BUDAT C(008) Posting Date
WAERS C(004) Currency
XBLNR C(016) Reference
BKTXT C(025) Header Text
NEWBS C(002) Posting Key 01
NEWKO C(017) GL Account
WRBTR C(013) Amount
ZUONR C(018) assignment
SGTXT C(050) Historical Text
NEWKO2 C(017) Off setting GL Account
WRBTR2 C(013) Off Setting Amount
ZUONR2 C(018) assignment
SGTXT2 C(050) Historical Text
NEWBS2 C(002) Posting Key 02
If you have a ABAPer I recommend you ask for a development for document mass upload.
Let me know if you need more information.
Regards