diff --git a/src/Resources/Adjustments/Operations/CreateAdjustment.php b/src/Resources/Adjustments/Operations/CreateAdjustment.php
index 45f227c..f969ae9 100644
--- a/src/Resources/Adjustments/Operations/CreateAdjustment.php
+++ b/src/Resources/Adjustments/Operations/CreateAdjustment.php
@@ -38,6 +38,16 @@ public function __construct(
         }
     }
 
+    public static function full(Action $action, string $reason, string $transactionId): self
+    {
+        return new self($action, new Undefined(), $reason, $transactionId, AdjustmentType::Full());
+    }
+
+    public static function partial(Action $action, array $items, string $reason, string $transactionId): self
+    {
+        return new self($action, $items, $reason, $transactionId, AdjustmentType::Partial());
+    }
+
     public function jsonSerialize(): array
     {
         if (is_array($this->items)) {
diff --git a/tests/Functional/Resources/Adjustments/AdjustmentsClientTest.php b/tests/Functional/Resources/Adjustments/AdjustmentsClientTest.php
index 4ed5fdb..dfe5245 100644
--- a/tests/Functional/Resources/Adjustments/AdjustmentsClientTest.php
+++ b/tests/Functional/Resources/Adjustments/AdjustmentsClientTest.php
@@ -19,7 +19,6 @@
 use Paddle\SDK\Resources\Adjustments\Operations\ListAdjustments;
 use Paddle\SDK\Resources\Shared\Operations\List\Pager;
 use Paddle\SDK\Tests\Utils\ReadsFixtures;
-use Paddle\SDK\Undefined;
 use PHPUnit\Framework\TestCase;
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
@@ -103,7 +102,7 @@ public static function createOperationsProvider(): \Generator
         ];
 
         yield 'Partial type with items' => [
-            new CreateAdjustment(
+            CreateAdjustment::partial(
                 Action::Refund(),
                 [new AdjustmentItem(
                     'txnitm_01h8bxryv3065dyh6103p3yg28',
@@ -112,19 +111,16 @@ public static function createOperationsProvider(): \Generator
                 )],
                 'error',
                 'txn_01h8bxpvx398a7zbawb77y0kp5',
-                \Paddle\SDK\Entities\Adjustment\AdjustmentType::Partial(),
             ),
             new Response(200, body: self::readRawJsonFixture('response/minimal_entity')),
             self::readRawJsonFixture('request/create_type_partial_with_items'),
         ];
 
         yield 'Full type with no items' => [
-            new CreateAdjustment(
+            CreateAdjustment::full(
                 Action::Refund(),
-                new Undefined(),
                 'error',
                 'txn_01h8bxpvx398a7zbawb77y0kp5',
-                \Paddle\SDK\Entities\Adjustment\AdjustmentType::Full(),
             ),
             new Response(200, body: self::readRawJsonFixture('response/minimal_entity')),
             self::readRawJsonFixture('request/create_type_full_with_no_items'),