// $policy - 0 or 1: writeoff/return for IV, back order/cancel for DN
function write($policy=0) {
begin_transaction(); // prevents partial database changes in case of direct delivery/invoice
// $policy - 0 or 1: writeoff/return for IV, back order/cancel for DN
function write($policy=0) {
begin_transaction(); // prevents partial database changes in case of direct delivery/invoice