Hi,
Try this query:
SELECT T1.[CardName]'CustName',T1.DocNum 'SOOrder',T1.[DocStatus]'SOStatus',T0.[Project]'JobNo', T0.ItemCode,T0.Quantity 'SOQty',T2.Quantity 'Delivered QTY',T0.OpenQty 'BalQty', T3.DocNum 'Delivery#',T3.[DocDueDate]'DelDate'
From RDR1 T0 inner join ORDR T1 on T0.DocEntry=T1.DocEntry
Thanks & Regards,
Nagarajan