Andreas Ellewsen
--- a/setra_client/client.py
+++ b/setra_client/client.py
+        was found, but did not meet the status criteria mentioned above.
        """
        url = self.urls.put_update_batch()
        headers = {'Content-Type': 'application/json'}
        response = self.put(url,
-                             data=batchdata.json(),
-                             headers=headers,
-                             return_response=True)
-        if response.status_code in (204, 202):
-            return 'OK'
+                            data=batchdata.json(),
+                            headers=headers,
+                            return_response=True)
+        if response.status_code == 204:
+            return response.content, 'No Content'
        elif response.status_code == 409: