diff --git a/src/Resources/AffiliateSeller.php b/src/Resources/AffiliateSeller.php
index 48b5d49..cb3f6d6 100644
--- a/src/Resources/AffiliateSeller.php
+++ b/src/Resources/AffiliateSeller.php
@@ -93,4 +93,107 @@ public function searchCreatorOnMarketplace($query = [], $body = [])
             RequestOptions::JSON => $body,
         ], 202406);
     }
+
+    public function generateAffiliateProductPromotionLink($product_id)
+    {
+        return $this->call('POST', 'products/'.$product_id.'/promotion_link/generate');
+    }
+
+    public function searchSampleApplicationsFulfillments($application_id, $body = [])
+    {
+        return $this->call('POST', 'sample_applications/'.$application_id.'/fulfillments/search', [
+            RequestOptions::JSON => $body,
+        ], 202409);
+    }
+
+    public function reviewSampleApplications($application_id, $review_result, $reject_reason = '')
+    {
+        return $this->call('POST', 'sample_applications/'.$application_id.'/review', [
+            RequestOptions::JSON => [
+                'review_result' => $review_result,
+                'reject_reason' => $reject_reason,
+            ],
+        ], 202409);
+    }
+
+    public function getOpenCollaborationSampleRules($product_ids)
+    {
+        return $this->call('GET', 'open_collaborations/sample_rules', [
+            RequestOptions::QUERY => [
+                'product_ids' => static::dataTypeCast('array', $product_ids),
+            ],
+        ], 202410);
+    }
+
+    public function searchSampleApplications($query = [], $body = [])
+    {
+        $query = array_merge([
+            'page_size' => 20,
+        ], $query);
+
+        return $this->call('POST', 'sample_applications/search', [
+            RequestOptions::QUERY => $query,
+            RequestOptions::JSON => $body,
+        ], 202409);
+    }
+
+    public function editOpenCollaborationSampleRule($body = [])
+    {
+        return $this->call('POST', 'open_collaborations/sample_rules', [
+            RequestOptions::JSON => $body,
+        ], 202410);
+    }
+
+    public function removeTargetCollaboration($target_collaboration_id)
+    {
+        return $this->call('DELETE', 'target_collaborations/'.$target_collaboration_id,
+            [], 202409);
+    }
+
+    public function queryTargetCollaborationDetail($target_collaboration_id)
+    {
+        return $this->call('GET', 'target_collaborations/'.$target_collaboration_id,
+            [], 202409);
+    }
+
+    public function searchTargetCollaborations($query = [], $body = [])
+    {
+        $query = array_merge([
+            'page_size' => 20,
+        ], $query);
+
+        return $this->call('POST', 'target_collaborations/search', [
+            RequestOptions::QUERY => $query,
+            RequestOptions::JSON => $body,
+        ], 202409);
+    }
+
+    public function updateTargetCollaboration($target_collaboration_id, $body)
+    {
+        return $this->call('PUT', 'target_collaborations/'.$target_collaboration_id, [
+            RequestOptions::JSON => $body,
+        ], 202409);
+    }
+
+    public function searchOpenCollaboration($query = [], $body = [])
+    {
+        $query = array_merge([
+            'page_size' => 20,
+        ], $query);
+
+        return $this->call('POST', 'open_collaborations/search', [
+            RequestOptions::QUERY => $query,
+            RequestOptions::JSON => $body,
+        ], 202409);
+    }
+
+    public function getOpenCollaborationSettings()
+    {
+        return $this->call('GET', 'open_collaboration_settings', [], 202409);
+    }
+
+    public function removeOpenCollaboration($product_id)
+    {
+        return $this->call('DELETE', 'open_collaborations/products/'.$product_id, [], 202409);
+    }
 }
diff --git a/src/Resources/Fulfillment.php b/src/Resources/Fulfillment.php
index e6afb8c..efdf49c 100644
--- a/src/Resources/Fulfillment.php
+++ b/src/Resources/Fulfillment.php
@@ -153,7 +153,7 @@ public function splitOrders($order_id, $splittable_groups)
         return $this->call('POST', 'orders/'.$order_id.'/split', [
             RequestOptions::JSON => [
                 'order_id' => $order_id,
-                'splittable_groups' => static::dataTypeCast('array', $splittable_groups),
+                'splittable_groups' => $splittable_groups,
             ],
         ]);
     }
diff --git a/tests/Resources/AffiliateSellerTest.php b/tests/Resources/AffiliateSellerTest.php
index e42e94f..b093378 100644
--- a/tests/Resources/AffiliateSellerTest.php
+++ b/tests/Resources/AffiliateSellerTest.php
@@ -67,4 +67,82 @@ public function testSearchCreatorOnMarketplace()
         $this->caller->searchCreatorOnMarketplace();
         $this->assertPreviousRequest('POST', 'affiliate_seller/202406/marketplace_creators/search');
     }
+
+    public function testGenerateAffiliateProductPromotionLink()
+    {
+        $this->caller->generateAffiliateProductPromotionLink(1);
+        $this->assertPreviousRequest('POST', 'affiliate_seller/'.self::TEST_API_VERSION.'/products/1/promotion_link/generate');
+    }
+
+    public function testSearchSampleApplicationsFulfillments()
+    {
+        $this->caller->searchSampleApplicationsFulfillments(1);
+        $this->assertPreviousRequest('POST', 'affiliate_seller/202409/sample_applications/1/fulfillments/search');
+    }
+
+    public function testReviewSampleApplications()
+    {
+        $this->caller->reviewSampleApplications(1, '', '');
+        $this->assertPreviousRequest('POST', 'affiliate_seller/202409/sample_applications/1/review');
+    }
+
+    public function testGetOpenCollaborationSampleRules()
+    {
+        $this->caller->getOpenCollaborationSampleRules([]);
+        $this->assertPreviousRequest('GET', 'affiliate_seller/202410/open_collaborations/sample_rules');
+    }
+
+    public function testSearchSampleApplications()
+    {
+        $this->caller->searchSampleApplications();
+        $this->assertPreviousRequest('POST', 'affiliate_seller/202409/sample_applications/search');
+    }
+
+    public function testEditOpenCollaborationSampleRule()
+    {
+        $this->caller->editOpenCollaborationSampleRule([]);
+        $this->assertPreviousRequest('POST', 'affiliate_seller/202410/open_collaborations/sample_rules');
+    }
+
+    public function testRemoveTargetCollaboration()
+    {
+        $this->caller->removeTargetCollaboration(1);
+        $this->assertPreviousRequest('DELETE', 'affiliate_seller/202409/target_collaborations/1');
+    }
+
+    public function testQueryTargetCollaborationDetail()
+    {
+        $this->caller->queryTargetCollaborationDetail(1);
+        $this->assertPreviousRequest('GET', 'affiliate_seller/202409/target_collaborations/1');
+    }
+
+    public function testSearchTargetCollaborations()
+    {
+        $this->caller->searchTargetCollaborations();
+        $this->assertPreviousRequest('POST', 'affiliate_seller/202409/target_collaborations/search');
+    }
+
+    public function testUpdateTargetCollaboration()
+    {
+        $this->caller->updateTargetCollaboration(1, []);
+        $this->assertPreviousRequest('PUT', 'affiliate_seller/202409/target_collaborations/1');
+    }
+
+    public function testSearchOpenCollaboration()
+    {
+        $this->caller->searchOpenCollaboration();
+        $this->assertPreviousRequest('POST', 'affiliate_seller/202409/open_collaborations/search');
+    }
+
+    public function testGetOpenCollaborationSettings()
+    {
+        $this->caller->getOpenCollaborationSettings();
+        $this->assertPreviousRequest('GET', 'affiliate_seller/202409/open_collaboration_settings');
+    }
+
+    public function testRemoveOpenCollaboration()
+    {
+        $this->caller->removeOpenCollaboration(1);
+        $this->assertPreviousRequest('DELETE', 'affiliate_seller/202409/open_collaborations/products/1');
+    }
 }