TR_WRITEOFFADJUSTMENT_INSERTUPDATE_CURRENCY (Trigger)

                
                    create trigger [dbo].[TR_WRITEOFFADJUSTMENT_INSERTUPDATE_CURRENCY] on [dbo].[WRITEOFFADJUSTMENT] 
                    after insert, update 
                    not for replication
                    as
                    begin
                        set nocount on;
                        
                        declare @ORGANIZATIONCURRENCYID uniqueidentifier = dbo.UFN_CURRENCY_GETORGANIZATIONCURRENCY(); 

                        -- if we try to save an amount without explicitly setting an organization amount and an exchange rate, 

                        -- copy the amount to the organization and transaction amounts.

                        if update(PREVIOUSAMOUNT)
                            update
                                dbo.WRITEOFFADJUSTMENT
                            set
                                WRITEOFFADJUSTMENT.ORGANIZATIONPREVIOUSAMOUNT = WRITEOFFADJUSTMENT.PREVIOUSAMOUNT,
                                WRITEOFFADJUSTMENT.TRANSACTIONPREVIOUSAMOUNT = WRITEOFFADJUSTMENT.PREVIOUSAMOUNT,
                                WRITEOFFADJUSTMENT.BASECURRENCYID = @ORGANIZATIONCURRENCYID,
                                WRITEOFFADJUSTMENT.TRANSACTIONCURRENCYID = @ORGANIZATIONCURRENCYID,
                                WRITEOFFADJUSTMENT.CHANGEDBYID = WRITEOFFADJUSTMENT.CHANGEDBYID,
                                WRITEOFFADJUSTMENT.DATECHANGED = WRITEOFFADJUSTMENT.DATECHANGED
                            from
                                inserted
                            inner join
                                dbo.WRITEOFFADJUSTMENT on inserted.ID = WRITEOFFADJUSTMENT.ID
                            where
                                WRITEOFFADJUSTMENT.ORGANIZATIONEXCHANGERATEID is null
                                and (WRITEOFFADJUSTMENT.BASECURRENCYID is null or WRITEOFFADJUSTMENT.BASECURRENCYID = @ORGANIZATIONCURRENCYID)
                                and WRITEOFFADJUSTMENT.BASEEXCHANGERATEID is null
                                and (WRITEOFFADJUSTMENT.TRANSACTIONCURRENCYID is null or WRITEOFFADJUSTMENT.TRANSACTIONCURRENCYID = @ORGANIZATIONCURRENCYID)
                                and 
                                (
                                    WRITEOFFADJUSTMENT.ORGANIZATIONPREVIOUSAMOUNT <> WRITEOFFADJUSTMENT.PREVIOUSAMOUNT
                                    or WRITEOFFADJUSTMENT.TRANSACTIONPREVIOUSAMOUNT <> WRITEOFFADJUSTMENT.PREVIOUSAMOUNT
                                    or WRITEOFFADJUSTMENT.PREVIOUSAMOUNT = 0
                                )
                    end