Hi Peter Eschweg
Try This
SELECT T0.[CardCode], T0.[CardName], T3.[ItemCode], T2.[ItemName], T1.[Price], T3.[Price] as Sonderpreis, T3.[Discount]
FROM OSPP T3
left outer JOIN OCRD T0 ON T0.CardCode=T3.CardCode
INNER JOIN OITM T2 ON T3.ItemCode = T2.ItemCode
LEFT JOIN ITM1 T1 ON T2.ItemCode = T1.ItemCode AND T1.[PriceList] = 1
WHERE T3.ItemCode = [%0]
Regards
Kennedy