diff --git a/src/common/type_checkers/Assertions.py b/src/common/type_checkers/Assertions.py
index 90b7d976b0f6fff9d478ce7b40188240a8eea2d6..3934c9d89568be90129bb766c61b55a532d2f0b3 100644
--- a/src/common/type_checkers/Assertions.py
+++ b/src/common/type_checkers/Assertions.py
@@ -48,6 +48,8 @@ def validate_device_driver_enum(message):
         'DEVICEDRIVER_GNMI_OPENCONFIG',
         'DEVICEDRIVER_OPTICAL_TFS',
         'DEVICEDRIVER_IETF_ACTN',
+        'DEVICEDRIVER_OC',
+        'DEVICEDRIVER_QKD',
     ]
 
 def validate_device_operational_status_enum(message):
@@ -58,6 +60,20 @@ def validate_device_operational_status_enum(message):
         'DEVICEOPERATIONALSTATUS_ENABLED'
     ]
 
+def validate_isolation_level_enum(message):
+    assert isinstance(message, str)
+    assert message in [
+        'NO_ISOLATION',
+        'PHYSICAL_ISOLATION',
+        'LOGICAL_ISOLATION',
+        'PROCESS_ISOLATION',
+        'PHYSICAL_MEMORY_ISOLATION',
+        'PHYSICAL_NETWORK_ISOLATION',
+        'VIRTUAL_RESOURCE_ISOLATION',
+        'NETWORK_FUNCTIONS_ISOLATION',
+        'SERVICE_ISOLATION',
+    ]
+
 def validate_kpi_sample_types_enum(message):
     assert isinstance(message, str)
     assert message in [
@@ -70,6 +86,16 @@ def validate_kpi_sample_types_enum(message):
         'KPISAMPLETYPE_LINK_USED_CAPACITY_GBPS',
     ]
 
+def validate_link_type_enum(message):
+    assert isinstance(message, str)
+    assert message in [
+        'LINKTYPE_UNKNOWN',
+        'LINKTYPE_COPPER',
+        'LINKTYPE_VIRTUAL_COPPER',
+        'LINKTYPE_OPTICAL',
+        'LINKTYPE_VIRTUAL_OPTICAL',
+    ]
+
 def validate_service_type_enum(message):
     assert isinstance(message, str)
     assert message in [
@@ -79,6 +105,8 @@ def validate_service_type_enum(message):
         'SERVICETYPE_TAPI_CONNECTIVITY_SERVICE',
         'SERVICETYPE_TE',
         'SERVICETYPE_E2E',
+        'SERVICETYPE_OPTICAL_CONNECTIVITY',
+        'SERVICETYPE_QKD',
     ]
 
 def validate_service_state_enum(message):
@@ -148,6 +176,22 @@ def validate_constraint_custom(message):
     assert 'constraint_value' in message
     assert isinstance(message['constraint_value'], str)
 
+def validate_constraint_schedule(message):
+    assert isinstance(message, dict)
+    assert len(message.keys()) == 2
+    assert 'start_timestamp' in message
+    assert isinstance(message['start_timestamp'], (int, float))
+    assert 'duration_days' in message
+    assert isinstance(message['duration_days'], (int, float))
+
+def validate_constraint_endpoint_priority(message):
+    assert isinstance(message, dict)
+    assert len(message.keys()) == 2
+    assert 'endpoint_id' in message
+    validate_endpoint_id(message['endpoint_id'])
+    assert 'priority' in message
+    assert isinstance(message['priority'], int)
+
 def validate_constraint_sla_capacity(message):
     assert isinstance(message, dict)
     assert len(message.keys()) == 1
@@ -172,16 +216,25 @@ def validate_constraint_sla_availability(message):
     assert isinstance(message['availability'], (int, float))
     assert message['availability'] >= 0 and message['availability'] <= 100
 
+def validate_constraint_sla_isolation(message):
+    assert isinstance(message, dict)
+    assert len(message.keys()) == 1
+    assert 'isolation_level' in message
+    assert isinstance(message['isolation_level'], list)
+    for isolation_level in message['isolation_level']:
+        validate_isolation_level_enum(isolation_level)
+
 CONSTRAINT_TYPE_TO_VALIDATOR = {
     'custom'            : validate_constraint_custom,
-    #'schedule'          : validate_constraint_schedule,
+    'schedule'          : validate_constraint_schedule,
     #'endpoint_location' : validate_constraint_endpoint_location,
-    #'endpoint_priority' : validate_constraint_endpoint_priority,
+    'endpoint_priority' : validate_constraint_endpoint_priority,
     'sla_capacity'      : validate_constraint_sla_capacity,
     'sla_latency'       : validate_constraint_sla_latency,
     'sla_availability'  : validate_constraint_sla_availability,
-    #'sla_isolation'     : validate_constraint_sla_isolation,
+    'sla_isolation'     : validate_constraint_sla_isolation,
     #'exclusions'        : validate_constraint_exclusions,
+    #'qos_profile'       : validate_constraint_qos_profile,
 }
 
 def validate_constraint(message):
@@ -479,7 +532,7 @@ def validate_device(message):
 
 def validate_link(message):
     assert isinstance(message, dict)
-    assert len(message.keys()) == 4
+    assert len(message.keys()) == 5
     assert 'link_id' in message
     validate_link_id(message['link_id'])
     assert 'name' in message
@@ -489,6 +542,8 @@ def validate_link(message):
     for endpoint_id in message['link_endpoint_ids']: validate_endpoint_id(endpoint_id)
     assert 'attributes' in message
     validate_link_attributes(message['attributes'])
+    assert 'link_type' in message
+    validate_link_type_enum(message['link_type'])
 
 def validate_connection(message):
     assert isinstance(message, dict)