diff --git a/core/Controller/TaskProcessingApiController.php b/core/Controller/TaskProcessingApiController.php
index 0a63ccac14b2d..6a88ff9a7315b 100644
--- a/core/Controller/TaskProcessingApiController.php
+++ b/core/Controller/TaskProcessingApiController.php
@@ -101,7 +101,7 @@ public function taskTypes(): DataResponse {
 	 * @param array<string, mixed> $input Task's input parameters
 	 * @param string $type Type of the task
 	 * @param string $appId ID of the app that will execute the task
-	 * @param string $identifier An arbitrary identifier for the task
+	 * @param string $customId An arbitrary identifier for the task
 	 *
 	 * @return DataResponse<Http::STATUS_OK, array{task: CoreTaskProcessingTask}, array{}>|DataResponse<Http::STATUS_INTERNAL_SERVER_ERROR|Http::STATUS_BAD_REQUEST|Http::STATUS_PRECONDITION_FAILED|Http::STATUS_UNAUTHORIZED, array{message: string}, array{}>
 	 *
diff --git a/core/openapi.json b/core/openapi.json
index 6d5317e5f25dd..ae64ec1e33dfc 100644
--- a/core/openapi.json
+++ b/core/openapi.json
@@ -496,7 +496,7 @@
                     "appId",
                     "input",
                     "output",
-                    "identifier",
+                    "customId",
                     "completionExpectedAt",
                     "progress"
                 ],
@@ -577,7 +577,7 @@
                             ]
                         }
                     },
-                    "identifier": {
+                    "customId": {
                         "type": "string",
                         "nullable": true
                     },
@@ -3471,7 +3471,7 @@
                         }
                     },
                     {
-                        "name": "identifier",
+                        "name": "customId",
                         "in": "query",
                         "description": "An arbitrary identifier for the task",
                         "schema": {