diff --git a/inventory_provider/routes/data.py b/inventory_provider/routes/data.py
index 9c9842d9ec2e32b921b585f8d5a66d7032934552..f63197b3ebb52b1023dce2d62ca83f99878fdf35 100644
--- a/inventory_provider/routes/data.py
+++ b/inventory_provider/routes/data.py
@@ -22,8 +22,12 @@ ROUTER_INTERFACES_SCHEMA = {
         "type": "object",
         "properties": {
             "name": {"type": "string"},
-            "router": {"type": "string"},
             "description": {"type": "string"},
+            "router": {"type": "string"},
+            "bundle": {
+                "type": "array",
+                "items": {"type": "string"}
+            },
             "ipv4": {
                 "type": "array",
                 "items": {"type": "string"}
@@ -31,9 +35,11 @@ ROUTER_INTERFACES_SCHEMA = {
             "ipv6": {
                 "type": "array",
                 "items": {"type": "string"}
-            }
+            },
+            # only if not the default
+            "logical-system": {"type": "string"},
         },
-        "required": ["name", "description", "router", "ipv4", "ipv6"],
+        "required": ["name", "description", "ipv4", "router", "ipv6"],
         "additionalProperties": False
     }
 }
diff --git a/test/per_router/test_data_routes.py b/test/per_router/test_data_routes.py
index b795eb6ef3b9f1200c599613cde9c1ceaadd7701..4bc828acc39ce7faedb3b7ff0d206fec861ecca3 100644
--- a/test/per_router/test_data_routes.py
+++ b/test/per_router/test_data_routes.py
@@ -3,6 +3,7 @@ import json
 import pytest
 import jsonschema
 from inventory_provider.routes import msr
+from inventory_provider.routes.data import ROUTER_INTERFACES_SCHEMA
 
 DEFAULT_REQUEST_HEADERS = {
     "Content-type": "application/json",
@@ -11,41 +12,13 @@ DEFAULT_REQUEST_HEADERS = {
 
 
 def test_router_interfaces(router, client):
-
-    interfaces_list_schema = {
-        "$schema": "http://json-schema.org/draft-07/schema#",
-        "type": "array",
-        "items": {
-            "type": "object",
-            "properties": {
-                "name": {"type": "string"},
-                "description": {"type": "string"},
-                "router": {"type": "string"},
-                "bundle": {
-                    "type": "array",
-                    "items": {"type": "string"}
-                },
-                "ipv4": {
-                    "type": "array",
-                    "items": {"type": "string"}
-                },
-                "ipv6": {
-                    "type": "array",
-                    "items": {"type": "string"}
-                }
-            },
-            "required": ["name", "description", "ipv4", "router", "ipv6"],
-            "additionalProperties": False
-        }
-    }
-
     rv = client.post(
         "/data/interfaces/" + router,
         headers=DEFAULT_REQUEST_HEADERS)
 
     assert rv.status_code == 200
     response = json.loads(rv.data.decode("utf-8"))
-    jsonschema.validate(response, interfaces_list_schema)
+    jsonschema.validate(response, ROUTER_INTERFACES_SCHEMA)
     assert response  # at least shouldn't be empty
 
 
diff --git a/test/test_general_data_routes.py b/test/test_general_data_routes.py
index a618f8fb2c7ff6a0e01530511ce3fba166ef9a23..ce98d99c28970eb74565ee0ba28b1aa984b27740 100644
--- a/test/test_general_data_routes.py
+++ b/test/test_general_data_routes.py
@@ -2,6 +2,9 @@ import contextlib
 import json
 import jsonschema
 
+from inventory_provider.routes.data \
+    import ROUTER_INTERFACES_SCHEMA, ROUTERS_RESPONSE_SCHEMA
+
 DEFAULT_REQUEST_HEADERS = {
     "Content-type": "application/json",
     "Accept": ["application/json"]
@@ -9,18 +12,12 @@ DEFAULT_REQUEST_HEADERS = {
 
 
 def test_get_routers(client):
-    version_schema = {
-        "$schema": "http://json-schema.org/draft-07/schema#",
-        "type": "array",
-        "items": {"type": "string"}
-    }
-
     rv = client.post(
-        "data/routers",
+        "/data/routers",
         headers=DEFAULT_REQUEST_HEADERS)
     assert rv.status_code == 200
     response = json.loads(rv.data.decode("utf-8"))
-    jsonschema.validate(response, version_schema)
+    jsonschema.validate(response, ROUTERS_RESPONSE_SCHEMA)
     assert response
 
 
@@ -79,38 +76,11 @@ def test_pop_not_found(client, mocker):
 
 def test_router_interfaces_all(client):
 
-    interfaces_list_schema = {
-        "$schema": "http://json-schema.org/draft-07/schema#",
-        "type": "array",
-        "items": {
-            "type": "object",
-            "properties": {
-                "name": {"type": "string"},
-                "description": {"type": "string"},
-                "router": {"type": "string"},
-                "bundle": {
-                    "type": "array",
-                    "items": {"type": "string"}
-                },
-                "ipv4": {
-                    "type": "array",
-                    "items": {"type": "string"}
-                },
-                "ipv6": {
-                    "type": "array",
-                    "items": {"type": "string"}
-                }
-            },
-            "required": ["name", "description", "ipv4", "router", "ipv6"],
-            "additionalProperties": False
-        }
-    }
-
     rv = client.post(
         '/data/interfaces',
         headers=DEFAULT_REQUEST_HEADERS)
 
     assert rv.status_code == 200
     response = json.loads(rv.data.decode("utf-8"))
-    jsonschema.validate(response, interfaces_list_schema)
+    jsonschema.validate(response, ROUTER_INTERFACES_SCHEMA)
     assert response  # at least shouldn't be empty
diff --git a/test/test_general_routes.py b/test/test_general_routes.py
index 228a5db470bc2d3a5607d8410b4e706bed31d1be..254d9db122b4d944bdd66df67f8a41e5ca67712c 100644
--- a/test/test_general_routes.py
+++ b/test/test_general_routes.py
@@ -30,6 +30,7 @@ def test_load_json_docs(data_config, mocked_redis):
             "interface": {
                 "type": "object",
                 "properties": {
+                    "logical-system": {"type": "string"},
                     "name": {"type": "string"},
                     "description": {"type": "string"},
                     "bundle": {