Hi,
Try this:
SELECT T3.[SlpName], T2.[Country], T2.[State1],T1.[ItemCode], T1.[Dscription], T1.[Quantity], sum(t1.linetotal) as Total FROM ODLN T0 INNER JOIN DLN1 T1 ON T0.DocEntry = T1.DocEntry left join OCRD t2 on t2.cardcode = t0.cardcode left JOIN OSLP T3 ON T2.SlpCode = T3.SlpCode WHERE T0.[docdate] between [%0] and [%1] and T3.[SlpName] = [%2] GROUP BY T3.[SlpName],T2.[Country], T2.[State1],T1.[ItemCode], T1.[Dscription],T1.[Quantity]
Thanks & Regards,
Nagarajan