diff --git a/apps/mtm/serializers.py b/apps/mtm/serializers.py
index 77d58044..6f94984c 100644
--- a/apps/mtm/serializers.py
+++ b/apps/mtm/serializers.py
@@ -134,7 +134,7 @@ class RoutePackSerializer(CustomModelSerializer):
     class Meta:
         model = RoutePack
         fields = '__all__'
-        read_only_fields = EXCLUDE_FIELDS + ['state']
+        read_only_fields = EXCLUDE_FIELDS + ['state', 'ticket']
     
     def update(self, instance, validated_data):
         if validated_data['material'] != instance.material:
@@ -161,6 +161,8 @@ class RouteSerializer(CustomModelSerializer):
         read_only_fields = EXCLUDE_FIELDS
 
     def validate(self, attrs):
+        if 'routepack' in attrs:
+            attrs['material'] = attrs['routepack'].material
         if 'mgroup' in attrs and attrs['mgroup']:
             attrs['process'] = attrs['mgroup'].process
         if attrs.get('process', None) is None: