diff --git a/hackfest/tfs-descriptors/old/service.json b/hackfest/tfs-descriptors/old/service.json
index a25d0171dbfdbf174a877151201752c76759514a..26804dcf133fa6c83be70a72374b0f19435d24d6 100644
--- a/hackfest/tfs-descriptors/old/service.json
+++ b/hackfest/tfs-descriptors/old/service.json
@@ -18,8 +18,8 @@
                 {"device_id":{"device_uuid":{"uuid":"R2"}},"endpoint_uuid":{"uuid":"1/3"}}
             ],
             "service_constraints":[
-                {"custom": {"constraint_type": "bandwidth[gbps]", "constraint_value": "10.0"}},
-                {"custom": {"constraint_type": "latency[ms]", "constraint_value": "20.0"}}
+                {"sla_capacity": {"capacity_gbps": 10.0}},
+                {"sla_latency": {"e2e_latency_ms": 20.0}}
             ],
             "service_config":{"config_rules":[]}
         }
diff --git a/hackfest/tfs-descriptors/service-l3vpn.json b/hackfest/tfs-descriptors/service-l3vpn.json
index 457ba1a509aebc5eaea8caa37a09ac62ef286f32..723453b8b3d43a56386e15dec6f70fc368bca517 100644
--- a/hackfest/tfs-descriptors/service-l3vpn.json
+++ b/hackfest/tfs-descriptors/service-l3vpn.json
@@ -12,8 +12,8 @@
                 {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "1/2"}}
             ],
             "service_constraints": [
-                {"custom": {"constraint_type": "bandwidth[gbps]", "constraint_value": "10.0"}},
-                {"custom": {"constraint_type": "latency[ms]", "constraint_value": "15.2"}}
+                {"sla_capacity": {"capacity_gbps": 10.0}},
+                {"sla_latency": {"e2e_latency_ms": 15.2}}
             ],
             "service_config": {"config_rules": [
                 {"action": 1, "custom": {"resource_key": "/settings", "resource_value": {