diff --git a/src/Repositories/InventoryRepository.php b/src/Repositories/InventoryRepository.php
index 89ed2fe..06ae2bf 100644
--- a/src/Repositories/InventoryRepository.php
+++ b/src/Repositories/InventoryRepository.php
@@ -26,7 +26,7 @@ public function index(
         ?Id $colorIds = null
     ): iterable {
         $uri = uri('inventories', [], [
-            'item_types'  => toString($itemTypes, ItemType::default()),
+            'item_type'  => toString($itemTypes, ItemType::default()),
             'status'      => toString($status, InventoryStatus::default()),
             'category_id' => toString($categoryIds, Id::default()),
             'color_id'    => toString($colorIds, Id::default()),
diff --git a/src/Repositories/OrderRepository.php b/src/Repositories/OrderRepository.php
index 942a38f..85f8adb 100644
--- a/src/Repositories/OrderRepository.php
+++ b/src/Repositories/OrderRepository.php
@@ -95,9 +95,10 @@ public function findOrderItems(Order $order): iterable
         $itemsResponse = $this->gateway->get(uri('orders/{id}/items', ['id' => $order->orderId]));
 
         $items = [];
-
-        foreach ($itemsResponse->getData() as $data) {
-            $items[] = $this->itemTransformer->toObject($data);
+        foreach ($itemsResponse->getData() as $key => $itemsDataSet) {
+            foreach ($itemsDataSet as $itemData) {
+                $items[$key][] = $this->itemTransformer->toObject($itemData);
+            }
         }
 
         return $items;
diff --git a/src/ValueObjects/Address.php b/src/ValueObjects/Address.php
index c3f2a89..652345d 100644
--- a/src/ValueObjects/Address.php
+++ b/src/ValueObjects/Address.php
@@ -13,6 +13,7 @@ public function __construct(
         public ?string $city = null,
         public ?string $state = null,
         public ?string $postalCode = null,
+        public ?string $phoneNumber = null,
     ) {
     }
 }
diff --git a/src/ValueObjects/Cost.php b/src/ValueObjects/Cost.php
index 44d4bdc..355c2e6 100644
--- a/src/ValueObjects/Cost.php
+++ b/src/ValueObjects/Cost.php
@@ -8,12 +8,16 @@ public function __construct(
         public ?string $currencyCode = null,
         public ?float $subtotal = null,
         public ?float $grandTotal = null,
+        public ?float $finalTotal = null,
+        public ?float $salesTax = null,
+        public ?float $salestaxCollectedByBl = null,
         public ?float $etc1 = null,
         public ?float $etc2 = null,
         public ?float $insurance = null,
         public ?float $shipping = null,
         public ?float $credit = null,
         public ?float $coupon = null,
+        public ?float $vat = null,
         public ?float $vatRate = null,
         public ?float $vatAmount = null,
     ) {
diff --git a/src/ValueObjects/Order.php b/src/ValueObjects/Order.php
index 068b7e5..d6d177f 100644
--- a/src/ValueObjects/Order.php
+++ b/src/ValueObjects/Order.php
@@ -28,7 +28,7 @@ public function __construct(
         public ?Shipping $shipping = null,
         public ?Cost $cost = null,
         public ?Cost $dispCost = null,
-        public ?bool $salesTaxCollectedByBl = null,
+        public ?bool $salestaxCollectedByBl = null,
         public ?bool $vatCollectedByBl = null,
         public ?iterable $items = null,
         public ?iterable $messages = null,
diff --git a/src/ValueObjects/OrderItem.php b/src/ValueObjects/OrderItem.php
index 7fe0e4d..ec2e4a2 100644
--- a/src/ValueObjects/OrderItem.php
+++ b/src/ValueObjects/OrderItem.php
@@ -21,6 +21,7 @@ public function __construct(
         public ?string $remarks = null,
         public ?string $description = null,
         public ?float $weight = null,
+        public ?float $orderCost = null,
     ) {
     }
 }
diff --git a/src/ValueObjects/OrderMessage.php b/src/ValueObjects/OrderMessage.php
index aa6e1db..425e487 100644
--- a/src/ValueObjects/OrderMessage.php
+++ b/src/ValueObjects/OrderMessage.php
@@ -7,6 +7,7 @@
 class OrderMessage
 {
     public function __construct(
+        public ?string $messageID = null,
         public ?string $subject = null,
         public ?string $body = null,
         public ?string $from = null,
diff --git a/tests/responses/order_message.json b/tests/responses/order_message.json
index 295738d..3f74de7 100644
--- a/tests/responses/order_message.json
+++ b/tests/responses/order_message.json
@@ -1,4 +1,5 @@
 {
+  "messageID": 123456,
   "subject":"Regarding BrickLink Order #3986441",
   "body":"Hello...",
   "from":"covariance1",