code: public function cancelConsignment(ConsignmentInterface $consignment)
      {
          $adapter = $this->getAdapter($consignment);
          $event = new EventConsignment($consignment);
          $this->eventDispatcher->dispatch(Events::PRE_CONSIGNMENT_CANCEL, $event);
  
          try {
              $adapter->cancelConsignment($consignment);
              /** @var ParcelInterface $parcel */
              foreach ($consignment->getParcels() as $parcel) {
                  $parcel->setStatus(ConsignmentStatusList::STATUS_CANCELED);
              }
              $consignment->setStatus(ConsignmentStatusList::STATUS_CANCELED);
              $this->consignmentRepository->saveConsignment($consignment);
          } catch (\Exception $e) {
              throw new VendorAdapterException('Error during consignment cancel.', null, $e);
          }
  
          $event = new EventConsignment($consignment);
          $this->eventDispatcher->dispatch(Events::POST_CONSIGNMENT_CANCEL, $event);
      }
docs: Cancel given consignment. Allowed only in status different than "new".
  @param ConsignmentInterface $consignment
  @throws \Exception