If price change required approval in sales order

Question

Hi All,
one of our client wants that in sales order the unit price will come automatically according to BP price list. but if any one changes that price manually that should required approval.
The problem is that i have made one query that only block when first row is change. but if i change from 2nd row where first row item price is remain same as price list, in that case  no approval is firing.
i'm giving the query below.  can anybody solve my problem.
select     'True'
from     ocrd a, ait1 b
where     a.ListNum=b.PriceList and b.loginstanc =(     
     select     Max(A.loginstanc) loginstanc
     from     Ait1 a
     where     a.Itemcode=b.itemcode and a.pricelist=b.pricelist)     and a.cardcode=$[$4.0.0] and b.itemcode = $[$38.1.0] and b.price<> $[$38.14.Number]

Answer 1

Hi,
I think you could use validation store procedure (SP_TN) for the row level validation, UDF approval  that its value is Y or N (yes or no) in the header and use this query approval :
select 'true' from ordr t0 where $[ordr.U_approval] = 'Y'
. How it work , for example, you create condition in the SP_TN that if the price change manually, then there is an error mesage or system message (means that validation SP_TN works) explains the UDF must be Y meanwhile set the default value N.
If the UDF is Y, then approval work. After it is approved, the user could add it.
if you still want to use row level approval, you could set a SOP that tells there is only one item per sales order can be created.
Rgds,