diff --git a/SAS/TMSS/src/tmss/tmssapp/serializers/specification.py b/SAS/TMSS/src/tmss/tmssapp/serializers/specification.py
index dc0f28d734c988f0343ccd657564d789ca62e9ee..bf250c5a51a2781970924e9ec30eb415d147b9fe 100644
--- a/SAS/TMSS/src/tmss/tmssapp/serializers/specification.py
+++ b/SAS/TMSS/src/tmss/tmssapp/serializers/specification.py
@@ -288,6 +288,7 @@ class SchedulingSetSerializer(RelationalHyperlinkedModelSerializer):
 
 class SchedulingUnitDraftSerializer(RelationalHyperlinkedModelSerializer):
     requirements_doc = JSONEditorField(schema_source="requirements_template.schema")
+    scheduling_constraints_doc = JSONEditorField(schema_source="scheduling_constraints_template.schema")
     duration = FloatDurationField(read_only=True)
 
     class Meta: