Hi Shahan
Try the below query
SELECT 'Invoice' 'Type',T0.[DocNum],T0.DocStatus, T0.[DocDate], T0.[CardCode], T0.[CardName],t1.Dscription, T1.Price,T1.AcctCode,T1.Project,
T0.[DocCur], T0.[DocTotal], T0.[Comments]
FROM OPCH T0 INNER JOIN PCH1 T1 ON T0.DocEntry = T1.DocEntry WHERE T0.DocType = 'I' AND T0.[CANCELED] = 'N'
UNION ALL
SELECT 'Credit Memo',T0.[DocNum],T0.DocStatus, T0.[DocDate], T0.[CardCode], T0.[CardName],t1.Dscription,T1.Price,T1.AcctCode,T1.Project,
T0.[DocCur], T0.[DocTotal], T0.[Comments]
FROM ORPC T0 INNER JOIN RPC1 T1 ON T0.DocEntry = T1.DocEntry
With Regards
Balaji Sampath