diff --git a/app/Controllers/OrderTestController.php b/app/Controllers/OrderTestController.php
index 47d1d60..76619bd 100755
--- a/app/Controllers/OrderTestController.php
+++ b/app/Controllers/OrderTestController.php
@@ -308,8 +308,12 @@ class OrderTestController extends Controller {
             throw new \InvalidArgumentException('Tests must be an object');
         }
 
+        if (array_key_exists('created', $tests)) {
+            throw new \InvalidArgumentException('created tests are not supported');
+        }
+
         $delta = [
-            'created' => [],
+            'added' => [],
             'edited' => [],
             'deleted' => [],
         ];
@@ -326,7 +330,7 @@ class OrderTestController extends Controller {
             $delta[$key] = $tests[$key];
         }
 
-        if (empty($delta['created']) && empty($delta['edited']) && empty($delta['deleted'])) {
+        if (empty($delta['added']) && empty($delta['edited']) && empty($delta['deleted'])) {
             throw new \InvalidArgumentException('Tests delta is required');
         }
 
diff --git a/app/Models/OrderTest/OrderTestModel.php b/app/Models/OrderTest/OrderTestModel.php
index 6ec2825..a18808d 100755
--- a/app/Models/OrderTest/OrderTestModel.php
+++ b/app/Models/OrderTest/OrderTestModel.php
@@ -238,17 +238,17 @@ class OrderTestModel extends BaseModel {
         }
 
         $summary = [
-            'created' => [],
+            'added' => [],
             'edited' => [],
             'deleted' => [],
         ];
 
-        foreach (($testsDelta['created'] ?? []) as $item) {
+        foreach (($testsDelta['added'] ?? []) as $item) {
             if (!is_array($item)) {
-                throw new \InvalidArgumentException('Invalid created test payload');
+                throw new \InvalidArgumentException('Invalid added test payload');
             }
 
-            $summary['created'][] = $this->createTestRow($order, $item);
+            $summary['added'][] = $this->createTestRow($order, $item);
         }
 
         foreach (($testsDelta['edited'] ?? []) as $item) {
diff --git a/public/api-docs.bundled.yaml b/public/api-docs.bundled.yaml
index 0de7cf4..73ecf5c 100755
--- a/public/api-docs.bundled.yaml
+++ b/public/api-docs.bundled.yaml
@@ -1505,9 +1505,9 @@ paths:
                 Tests:
                   type: object
                   properties:
-                    created:
+                    added:
                       type: array
-                      description: New tests to create for this order
+                      description: New tests to add to this order
                       items:
                         type: object
                         properties:
diff --git a/tests/feature/OrderTest/OrderTestPatchTest.php b/tests/feature/OrderTest/OrderTestPatchTest.php
index f03d39e..db2bf5a 100755
--- a/tests/feature/OrderTest/OrderTestPatchTest.php
+++ b/tests/feature/OrderTest/OrderTestPatchTest.php
@@ -103,7 +103,7 @@ class OrderTestPatchTest extends CIUnitTestCase
         ];
     }
 
-    public function testPatchTestsLifecycleCreatedEditedDeleted(): void
+    public function testPatchTestsLifecycleAddedEditedDeleted(): void
     {
         $fixture = $this->createOrderWithTest();
         $order = $fixture['order'];
@@ -114,32 +114,32 @@ class OrderTestPatchTest extends CIUnitTestCase
         $baseSiteID = (int) $baseTest['TestSiteID'];
         $extraSiteID = (int) $extraTest['TestSiteID'];
 
-        $createResponse = $this->withHeaders($this->authHeaders())
+        $addResponse = $this->withHeaders($this->authHeaders())
             ->withBodyFormat('json')
             ->call('patch', "{$this->endpoint}/{$orderID}", [
                 'Tests' => [
-                    'created' => [
+                    'added' => [
                         [
-                            'TestSiteID' => $extraSiteID,
-                            'Result' => 'CREATED',
+                            'TestSiteID' => (string) $extraSiteID,
+                            'Result' => 'ADDED',
                         ],
                     ],
                 ],
             ]);
 
-        $createResponse->assertStatus(200);
-        $createJson = json_decode($createResponse->getJSON(), true);
-        $this->assertSame('success', $createJson['status'] ?? null);
+        $addResponse->assertStatus(200);
+        $addJson = json_decode($addResponse->getJSON(), true);
+        $this->assertSame('success', $addJson['status'] ?? null);
 
-        $createdRow = $this->findRowBySite($createJson['data']['Tests'] ?? [], $extraSiteID);
-        $this->assertNotNull($createdRow, 'Created test not returned by patch response.');
-        $this->assertSame('CREATED', $createdRow['Result'] ?? null);
-        $createdResultID = (int) ($createdRow['ResultID'] ?? 0);
-        $this->assertGreaterThan(0, $createdResultID, 'Created test missing ResultID.');
+        $addedRow = $this->findRowBySite($addJson['data']['Tests'] ?? [], $extraSiteID);
+        $this->assertNotNull($addedRow, 'Added test not returned by patch response.');
+        $this->assertSame('ADDED', $addedRow['Result'] ?? null);
+        $addedResultID = (int) ($addedRow['ResultID'] ?? 0);
+        $this->assertGreaterThan(0, $addedResultID, 'Added test missing ResultID.');
 
-        $createdDbRow = $this->findResultByOrderAndSite($internalOID, $extraSiteID);
-        $this->assertNotNull($createdDbRow, 'Created test not found in DB.');
-        $this->assertSame('CREATED', $createdDbRow['Result'] ?? null);
+        $addedDbRow = $this->findResultByOrderAndSite($internalOID, $extraSiteID);
+        $this->assertNotNull($addedDbRow, 'Added test not found in DB.');
+        $this->assertSame('ADDED', $addedDbRow['Result'] ?? null);
 
         $editResponse = $this->withHeaders($this->authHeaders())
             ->withBodyFormat('json')
@@ -147,7 +147,7 @@ class OrderTestPatchTest extends CIUnitTestCase
                 'Tests' => [
                     'edited' => [
                         [
-                            'TestSiteID' => $baseSiteID,
+                            'TestSiteID' => (string) $baseSiteID,
                             'Result' => 'EDITED',
                         ],
                     ],
@@ -167,7 +167,9 @@ class OrderTestPatchTest extends CIUnitTestCase
             ->call('patch', "{$this->endpoint}/{$orderID}", [
                 'Tests' => [
                     'deleted' => [
-                        $extraSiteID,
+                        [
+                            'TestSiteID' => (string) $extraSiteID,
+                        ],
                     ],
                 ],
             ]);
@@ -177,7 +179,7 @@ class OrderTestPatchTest extends CIUnitTestCase
         $this->assertSame('success', $deleteJson['status'] ?? null);
         $this->assertNull($this->findRowBySite($deleteJson['data']['Tests'] ?? [], $extraSiteID), 'Deleted test still returned by patch response.');
 
-        $deletedDbRow = (new PatResultModel())->find($createdResultID);
+        $deletedDbRow = (new PatResultModel())->find($addedResultID);
         $this->assertNotNull($deletedDbRow, 'Deleted test row missing from DB.');
         $this->assertNotNull($deletedDbRow['DelDate'] ?? null, 'Deleted test row not soft deleted.');
     }