diff --git a/services/director-v2/src/simcore_service_director_v2/modules/dynamic_sidecar/scheduler/events.py b/services/director-v2/src/simcore_service_director_v2/modules/dynamic_sidecar/scheduler/events.py
index 88f73c53d32..f1a788741a0 100644
--- a/services/director-v2/src/simcore_service_director_v2/modules/dynamic_sidecar/scheduler/events.py
+++ b/services/director-v2/src/simcore_service_director_v2/modules/dynamic_sidecar/scheduler/events.py
@@ -428,14 +428,15 @@ async def action(cls, app: FastAPI, scheduler_data: SchedulerData) -> None:
             network_name,
             container_aliases,
         ) in projects_networks.networks_with_aliases.items():
-            network_alias = container_aliases[f"{scheduler_data.node_uuid}"]
-            await dynamic_sidecar_client.attach_service_containers_to_project_network(
-                dynamic_sidecar_endpoint=dynamic_sidecar_endpoint,
-                dynamic_sidecar_network_name=scheduler_data.dynamic_sidecar_network_name,
-                project_network=network_name,
-                project_id=scheduler_data.project_id,
-                network_alias=network_alias,
-            )
+            network_alias = container_aliases.get(f"{scheduler_data.node_uuid}")
+            if network_alias is not None:
+                await dynamic_sidecar_client.attach_service_containers_to_project_network(
+                    dynamic_sidecar_endpoint=dynamic_sidecar_endpoint,
+                    dynamic_sidecar_network_name=scheduler_data.dynamic_sidecar_network_name,
+                    project_network=network_name,
+                    project_id=scheduler_data.project_id,
+                    network_alias=network_alias,
+                )
 
         scheduler_data.dynamic_sidecar.is_project_network_attached = True