Ok Deepak,
Try this one. I just added ItemCode here.
Select T0.NumAtCard,T0.DOCNUM AS
'ExInvoiceNo',CONVERT(VARCHAR(11), t0.docdate, 101) AS Posting_date,T12.FormNo,T0.U_VHCLNo,
T0.DOCTOTAL,T1.SubCatnum AS 'PartNo.',T1.ItemCode, T1.Quantity
from OINV T0
INNER JOIN INV1 T1 on T0.Docentry=T1.Docentry
INNER JOIN INV12 on T0.DocEntry=T12.DocEntry
where T0.DOCNUM >='[%0]' and t0.docnum <= '[%1]'
Thanks!