diff --git a/QA/QA_Service/lib/qa_service.py b/QA/QA_Service/lib/qa_service.py
index 13a8e1b874c55f410fb1033f8ef412bf62dbc691..c78bbc80c26995e0aea6e4806ccdf27022b97edb 100644
--- a/QA/QA_Service/lib/qa_service.py
+++ b/QA/QA_Service/lib/qa_service.py
@@ -188,7 +188,7 @@ class QAService:
                     return
 
         if subtask_id:
-            hdf5_file_path = self._convert_ms2hdf5(subtask_id)
+            hdf5_file_path = self._convert_ms2hdf5(otdb_id=otdb_id, subtask_id=subtask_id)
 
         if hdf5_file_path:
             # cluster it
diff --git a/QA/QA_Service/test/t_qa_service.py b/QA/QA_Service/test/t_qa_service.py
index 508007d1f7fd05e2bd4cfdbaa8a4a4f41da996b5..5bf33508b46f28b260a2f9248f7031a915177bcc 100755
--- a/QA/QA_Service/test/t_qa_service.py
+++ b/QA/QA_Service/test/t_qa_service.py
@@ -28,6 +28,7 @@ from datetime import datetime
 import logging
 
 from lofar.sas.tmss.client.tmssbuslistener import DEFAULT_TMSS_SUBTASK_NOTIFICATION_PREFIX
+from lofar.sas.tmss.test.test_utils import TMSSTestEnvironment
 
 logger = logging.getLogger(__name__)
 
@@ -96,7 +97,7 @@ class TestQAService(unittest.TestCase):
         '''
         self.TEST_UUID = uuid.uuid1()
         self.TEST_OTDB_ID = 999999
-        self.TEST_TMSS_ID = 2000000+999999
+        self.TEST_TMSS_ID = 2000001#+999999
 
         self.tmp_exchange = TemporaryExchange("%s_%s" % (__class__.__name__, self.TEST_UUID))
         self.tmp_exchange.open()
@@ -189,15 +190,6 @@ class TestQAService(unittest.TestCase):
                                         "time_of_change": datetime.utcnow()})
             sender.send(msg)
 
-    def send_tmss_task_scheduled_event(self):
-        '''helper method: create a ToBus and send a scheduled EventMessage'''
-        with self.tmp_exchange.create_tobus() as sender:
-            msg = EventMessage(subject="%s.Scheduled" % (DEFAULT_TMSS_SUBTASK_NOTIFICATION_PREFIX,),
-                               content={"subtask_id": self.TEST_TMSS_ID,
-                                        "old_state": "scheduling",
-                                        "new_state": 'scheduled'})
-            sender.send(msg)
-
     def test_01_qa_service_for_expected_behaviour(self):
         '''
         This test starts a QAService, triggers a test observation completing event,
@@ -503,6 +495,7 @@ class TestQAService(unittest.TestCase):
         the intermediate steps are tested in other tests/modules.
         '''
         logger.info(' -- test_05_qa_service_for_expected_behaviour_on_tmss_events -- ')
+        import requests
 
         # override the mock behaviour from setUp for this specific test
         def mocked_wrap_command_for_docker(cmd, image_name=None, image_label=None):
@@ -541,13 +534,17 @@ class TestQAService(unittest.TestCase):
 
         # start the QAService (the object under test)
         qaservice = QAService(exchange=self.tmp_exchange.address)
-        with qaservice, BusListenerJanitor(qaservice.filtering_otdbbuslistener), BusListenerJanitor(qaservice.filtering_tmssbuslistener), BusListenerJanitor(qaservice.commands_buslistener):
+        tmss_test_env = TMSSTestEnvironment(exchange=self.tmp_exchange.address)
 
+        with qaservice, tmss_test_env, BusListenerJanitor(qaservice.filtering_otdbbuslistener), BusListenerJanitor(qaservice.filtering_tmssbuslistener), BusListenerJanitor(qaservice.commands_buslistener):
             # start listening for QA event messages from the QAService
             with BusListenerJanitor(SynchronizationQABusListener(exchange=self.tmp_exchange.address)) as qa_listener:
-                # trigger a qa process by sending tmss subtask finished event
+                # trigger a qa process by setting the tmss subtask to scheduled
                 # this will result in the QAService actually doing its magic
-                self.send_tmss_task_scheduled_event()
+                auth = requests.auth.HTTPBasicAuth(tmss_test_env.ldap_server.dbcreds.user, tmss_test_env.ldap_server.dbcreds.password)
+                requests.patch(url=tmss_test_env.django_server.url+'/subtask/%s/' % self.TEST_TMSS_ID,
+                               json={'state': tmss_test_env.django_server.url+"/subtask_state/scheduled/" },
+                               auth=auth)
 
                 # start waiting until ConvertedMS2Hdf5 event message received (or timeout)
                 qa_listener.converted_event.wait(30)