diff --git a/SAS/TMSS/backend/src/tmss/tmssapp/serializers/scheduling.py b/SAS/TMSS/backend/src/tmss/tmssapp/serializers/scheduling.py
index d0660311e04974f7bec4cc8c2f24b49c51d115e4..68f1898a6afaf4836556e52979bd3226ebe21ae8 100644
--- a/SAS/TMSS/backend/src/tmss/tmssapp/serializers/scheduling.py
+++ b/SAS/TMSS/backend/src/tmss/tmssapp/serializers/scheduling.py
@@ -87,6 +87,11 @@ class SubtaskSerializer(DynamicRelationalHyperlinkedModelSerializer):
     class Meta:
         model = models.Subtask
         fields = '__all__'
+        extra_fields = ['input_dataproducts', 'output_dataproducts']
+        expandable_fields = {
+            'input_dataproducts': ('lofar.sas.tmss.tmss.tmssapp.serializers.DataproductSerializer', {'many': True}),
+            'output_dataproducts': ('lofar.sas.tmss.tmss.tmssapp.serializers.DataproductSerializer', {'many': True})
+        }
 
 
 class SubtaskInputSerializer(DynamicRelationalHyperlinkedModelSerializer):
diff --git a/SAS/TMSS/backend/src/tmss/tmssapp/serializers/specification.py b/SAS/TMSS/backend/src/tmss/tmssapp/serializers/specification.py
index 9cea775af716487a03fd1f9e6c6c8c845f2e0b19..a29fcbcfb975811d317d98a9adee1000b42d7ac5 100644
--- a/SAS/TMSS/backend/src/tmss/tmssapp/serializers/specification.py
+++ b/SAS/TMSS/backend/src/tmss/tmssapp/serializers/specification.py
@@ -332,7 +332,7 @@ class TaskBlueprintSerializer(DynamicRelationalHyperlinkedModelSerializer):
             'draft': 'lofar.sas.tmss.tmss.tmssapp.serializers.TaskDraftSerializer',
             'scheduling_unit_blueprint': 'lofar.sas.tmss.tmss.tmssapp.serializers.SchedulingUnitBlueprintSerializer',
             'specifications_template': 'lofar.sas.tmss.tmss.tmssapp.serializers.TaskTemplateSerializer',
-            'subtasks': ('lofar.sas.tmss.tmss.tmssapp.serializers.SutaskSerializer', {'many': True})
+            'subtasks': ('lofar.sas.tmss.tmss.tmssapp.serializers.SubtaskSerializer', {'many': True})
         }