Stevebauman\Inventory\Traits\InventoryTransactionTrait::receivedPartial PHP Method

    public function receivedPartial($quantity, $reason = '', $cost = 0)
    {
        $current = $this->getAttribute('quantity');
        if ((double) $quantity === (double) $current || $quantity > $current) {
            return $this->receivedAll($reason, $cost);
        }
        // Only allow the previous state of ordered
        $this->validatePreviousState([$this::STATE_ORDERED_PENDING], $this::STATE_ORDERED_RECEIVED_PARTIAL);
        // Get the left over amount of quantity still to be received
        $left = (double) $current - (double) $quantity;
        $this->setAttribute('quantity', $left);
        $previousState = $this->getAttribute('state');
        $this->setAttribute('state', $this::STATE_ORDERED_RECEIVED_PARTIAL);
        if (empty($reason)) {
            $reason = $this->getTransactionReason('received-partial');
        }
        if ($this->processStockPutAndSave($left, 'inventory.transaction.received.partial', $reason, $cost)) {
            return $this->returnToPreviousState($previousState);
        }
        return false;
    }