TR_EXCHANGESERVERAPPUSER_UPDATED

                    create trigger dbo.TR_EXCHANGESERVERAPPUSER_UPDATED on dbo.EXCHANGESERVERAPPUSER after update not for replication
                    as
                    begin
                        if update(IDENTIFIERTYPECODE) or update(EMAILADDRESS) begin
                            update 
                                dbo.EXCHANGEUSER
                            set
                                WATERMARK = ''
                            from
                                INSERTED
                            where 
                                EXCHANGEUSER.APPUSERID = INSERTED.APPUSERID
                        end
                    end