HANA Transaction Notification

Dear All,

I have written one transaction notification for stopping the user to enter the same itemname  and Mfr Catalogue No. again.

If @object_type = '4' and @transaction_type in ( 'A','U')

BEGIN

declare @ItmG int

declare @name char(100)

declare @catl char(100)

Select @name=I.ItemName,

       @ItmG=I.ItmsGrpCod,@catl=I.SuppCatNum

  From OITM I

  Where  I.ItemCode=@list_of_cols_val_tab_del

If exists (Select I.ItemName From OITM I

  Where I.ItemCode!=@list_of_cols_val_tab_del

    and I.ItmsGrpCod=@ItmG 

    and I.ItemName=@name     )

Select @error =12,

    @error_message = 'Duplicate Item Name!'

If exists (Select I.ItemName From OITM I

  Where I.ItemCode!=@list_of_cols_val_tab_del

    and I.ItmsGrpCod=@ItmG 

    and I.SuppCatNum=@catl     )

Select @error =12,

    @error_message = 'Duplicate Catlog!'

END

I am looking same code in HANA. I am new in HANA. Kindly Help me to get the solution.

Thanks

A Ali