Validation for issue for production not working

Question

hi all,
i have designed database validation for issue for production  .
by default SAP gives error  if instock is less than the quantity to be issued.
My Clients requierment is whlie issuing item for production, row level item quantity should not be greater than the instock of a warehouse selected for that item in row level.
while in case of sap default validation it considers all the instock of item from all the warehouse and i want to consider only those stock  of warehouse whih is selected for the item at row level.
my validation is as follows but it gives error for all cases.
IF @transaction_type in ('A','U') AND @object_type = '60'
BEGIN
declare @line as numeric(4)
declare @dline as numeric(4)
declare @ritem as nvarchar(50)
declare @bref as nvarchar(50)
select @bref= T1.[BaseRef] from OIge T0 left outer JOIN
Ige1 T1 ON T0.DocEntry = T1.DocEntry
left outer join oitm t2 on t2.itemcode=t1.itemcode
left outer join  OITW T3 on t3.whscode=t1.whscode and t3.itemcode = t1.itemcode
where T1.docentry=@list_of_cols_val_tab_del
set @dline=0
select @line= isnull(max(t1.linenum),0)
from OIge T0 left outer JOIN
Ige1 T1 ON T0.DocEntry = T1.DocEntry
left outer join oitm t2 on t2.itemcode=t1.itemcode
left outer join  OITW T3 on t3.whscode=t1.whscode and t3.itemcode = t1.itemcode
where t1.docentry= @list_of_cols_val_tab_del
while @dline<=@line
begin
select @ritem= t1.itemcode from OIge T0 left outer JOIN Ige1 T1 ON
T0.DocEntry = T1.DocEntry
left outer join oitm t2 on t2.itemcode=t1.itemcode
left outer join OITW T3 on t3.whscode=t1.whscode and t3.itemcode = t1.itemcode
where T0.DocEntry = @list_of_cols_val_tab_del and
t1.linenum=@dline
if exists (SELECT T0.DocEntry
from OIge T0 left outer JOIN Ige1 T1 ON T0.DocEntry = T1.DocEntry
left outer join oitm t2 on t2.itemcode=t1.itemcode
left outer join OITW T3 on t3.whscode=t1.whscode and t3.itemcode = t1.itemcode
where T0.DocEntry = @list_of_cols_val_tab_del and
t1.linenum=@dline and t1.itemcode in (@ritem) and t3.onhand < t1.quantity )
BEGIN
SELECT @Error = 1, @error_message = 'less quantity'
END
set @dline=isnull(@dline,0)+1
set @ritem=' '
end
END
pls suggest solution...

Answer 1

Iu2019m sorry. The error was that the tables contain the data after the transaction. So try this:
IF @object_type = '60' and @transaction_type= 'A'
and (Select top 1 j.BaseType from IGE1 j
      Where j.DocEntry = @list_of_cols_val_tab_del)=202
BEGIN
if exists
(Select i.DocEntry from IGE1 i
   Where i.DocEntry = @list_of_cols_val_tab_del
    and (select w.OnHand from OITW w
        where w.ItemCode=i.ItemCode and w.WhsCode=i.WhsCode)<0 )
Begin
set @error =1
set @error_message = 'Less quantity in the warehouse !'
End
END