Following are the query example for SAP Business One Transaction Notification in SAP  HANA Database, hope it will help you.

------BLOCK RETURN WITH  GREATER THAN ZERO COST -----------
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/*IF (:transaction_type ='A' OR :transaction_type ='U') AND :object_type = '16'  THEN  
SELECT (SELECT 1 FROM ORDN INNER JOIN RDN1 ON ORDN."DocEntry" = RDN1."DocEntry" 
INNER JOIN OITM ON RDN1."ItemCode" = OITM."ItemCode" 
WHERE  RDN1."StockPrice" <> '0' 
AND ORDN."DocEntry" = :list_of_cols_val_tab_del) 
INTO temp_var_0 FROM DUMMY;
IF :temp_var_0 > 0 THEN 
SELECT 123, 'BK - Cannot return  Goods with a cost greater than zero. The item cost must be zero'  FROM DUMMY;
Return;
END IF;
END IF;*/

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------BLOCK  Date of Loading should not be greater than current date and should not be less then posting date -----------
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IF (:transaction_type ='A' OR :transaction_type ='U') AND :object_type = '17'  THEN  
SELECT (SELECT 1 AS "CNT" FROM ORDR INNER JOIN RDR1 ON RDR1."DocEntry" = ORDR."DocEntry" 
WHERE ORDR."DocEntry" = :list_of_cols_val_tab_del AND (IFNULL(RDR1."U_DOL",NOW()) > NOW() )) 
OR RDR1."U_DOL" < ORDR."DocDate")) 
INTO temp_var_0 FROM DUMMY;
IF :temp_var_0 > 0 THEN 
SELECT 3, 'BK - You cannot enter the Date of Loading Greater than Today Date and Less then Document Date.'  FROM DUMMY;
Return;
END IF;
END IF;

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------BLOCK  GOODS RECIEPT PRICE AND PURCHASE ORDER PRICE SHOULD NOT BE DIFFERENT--------
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IF (:transaction_type ='A' OR :transaction_type ='U') AND :object_type = '20'  THEN
SELECT (SELECT 1 FROM PDN1 INNER JOIN POR1 ON PDN1."BaseEntry" = POR1."DocEntry" AND PDN1."BaseLine" = POR1."LineNum" AND PDN1."Price" > POR1."Price" 
INNER JOIN OPDN ON PDN1."DocEntry" = OPDN."DocEntry" 
 WHERE PDN1."DocEntry" = :list_of_cols_val_tab_del) 
INTO temp_var_0 FROM DUMMY;
IF :temp_var_0 > 0 THEN 
SELECT 5, 'GRN price is greater than PO price'  FROM DUMMY;
Return;
END IF;
END IF;

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