public function servicePurchaseOrder(PurchaseOrder $purchaseOrder, PurchaseOrderEntryCollection $purchaseOrderEntries) { $purchaseOrder->setSeries(PurchaseOrder::$Series['Default']); $parameters["purchaseOrderSachi"] = $purchaseOrder->toSAPArray(); $parameters["purchaseOrderSachi"]["Lines"] = $purchaseOrderEntries->toSAPArray(); $this->createLogrequest($parameters); return $this->soapClient->purchaseOrder($parameters); }