How to handle "No Checkout Authority could be found for PO" Error Message in SQL Server?

Dear, I have written a trigger, when user voilates trigger gives proper Error Message, but user need to close that PO and reopen it to make it correct. if user does not re-open the PO. he gets the error which is in attached file.
trigger code is given eblow.
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
ALTER TRIGGER [POSOProcessing]  
   ON  [dbo].[InvNum]
   AFTER UPDATE

AS
      SET NOCOUNT ON;
Begin
      If exists(select * from _btblInvoiceLines      Where iInvoiceID in ( Select AutoIndex From Inserted) and fUnitpriceincl >1000)
      Begin
            RAISERROR ('Enter Price for KG',16,1)
      End
End


set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go

ALTER TRIGGER [POSOProcessing]  
   ON  [dbo].[InvNum] 
   AFTER UPDATE 
	
AS 
	SET NOCOUNT ON;

Begin
	If exists(select * from _btblInvoiceLines	Where iInvoiceID in ( Select AutoIndex From Inserted) and fUnitpriceincl >1000)
	Begin
		RAISERROR ('Enter Price for KG',16,1)
	End
End

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Check-out-Authority.bmp
mahmood66Asked:
Who is Participating?
 
Lara FConnect With a Mentor EACommented:
execute all actions needed for
"user need to close that PO and reopen it"  
and then raise error
0
 
Lara FConnect With a Mentor EACommented:
Not sure what it means "user need to close that PO and reopen it"
Even if user gets error message all updated on a table  will be already done
In general This type of validation is better to do in UI level.

here is test for your trigger:
create table mytable (c int)
go
create TRIGGER tr_mytable   ON  mytable    AFTER UPDATE
AS
Begin
            RAISERROR ('Enter Price for KG',16,1)
End
go
insert into mytable values(5)
go
select * from  mytable
update mytable set c=10
select * from  mytable
0
 
mahmood66Author Commented:
Dear, i cannot do at UI level, because the source code we are not having, that's why i am trying to ristrict using trigger.
"Even if user gets error message all updated on a table will be already done" ( your are right but when my statement RaisError executes it rollbacks the transaction so my database is not save the wrong data).
0
 
mahmood66Author Commented:
with the help of experts idea, i have done.
0
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