diff --git a/nc_py_api/ex_app/providers/task_processing.py b/nc_py_api/ex_app/providers/task_processing.py
index 8f5a54eb..bb92fc53 100644
--- a/nc_py_api/ex_app/providers/task_processing.py
+++ b/nc_py_api/ex_app/providers/task_processing.py
@@ -186,13 +186,24 @@ def report_result(
         task_id: int,
         output: dict[str, typing.Any] | None = None,
         error_message: str | None = None,
+        user_facing_error_message: str | None = None,
     ) -> dict[str, typing.Any]:
-        """Report result of the task processing to Nextcloud."""
+        """Report result of the task processing to Nextcloud.
+
+        :param error_message: Technical/debug message for administrators.
+        :param user_facing_error_message: Message shown to the end user when the task failed.
+            Available starting with Nextcloud 33.
+        """
         with contextlib.suppress(NextcloudException):
             if r := self._session.ocs(
                 "POST",
                 f"/ocs/v2.php/taskprocessing/tasks_provider/{task_id}/result",
-                json={"taskId": task_id, "output": output, "errorMessage": error_message},
+                json={
+                    "taskId": task_id,
+                    "output": output,
+                    "errorMessage": error_message,
+                    "userFacingErrorMessage": user_facing_error_message,
+                },
             ):
                 return r
         return {}
@@ -283,13 +294,24 @@ async def report_result(
         task_id: int,
         output: dict[str, typing.Any] | None = None,
         error_message: str | None = None,
+        user_facing_error_message: str | None = None,
     ) -> dict[str, typing.Any]:
-        """Report result of the task processing to Nextcloud."""
+        """Report result of the task processing to Nextcloud.
+
+        :param error_message: Technical/debug message for administrators.
+        :param user_facing_error_message: Message shown to the end user when the task failed.
+            Available starting with Nextcloud 33.
+        """
         with contextlib.suppress(NextcloudException):
             if r := await self._session.ocs(
                 "POST",
                 f"/ocs/v2.php/taskprocessing/tasks_provider/{task_id}/result",
-                json={"taskId": task_id, "output": output, "errorMessage": error_message},
+                json={
+                    "taskId": task_id,
+                    "output": output,
+                    "errorMessage": error_message,
+                    "userFacingErrorMessage": user_facing_error_message,
+                },
             ):
                 return r
         return {}