Bueno, ya tengo la consulta por si alguien le sirve
SELECT T0.[DocNum], T0.[CardName], T2.ITEMCODE, T2.[Dscription], T2.[Quantity], T2.[OpenQty],T0.[DocCur], T2.[Price], T2.[OpenSum], T2.[OpenSumFC], T2.[ShipDate], (T1.[firstName]+' '+T1.[lastName])AS'Titular',T0.[DocDate]
FROM OPOR T0 LEFT JOIN OHEM T1 ON T0.[OwnerCode] = T1.[empID] left join POR1 T2 ON T0.DOCENTRY=T2.DOCENTRY
WHERE T0.[DocStatus] = 'O' AND T2.LINESTATUS= 'O'