diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2018-07-01/loadBalancer.json b/specification/network/resource-manager/Microsoft.Network/stable/2018-07-01/loadBalancer.json
index 47d0a41cd41b..875910451b83 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2018-07-01/loadBalancer.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2018-07-01/loadBalancer.json
@@ -1459,7 +1459,9 @@
         }
       },
       "required": [
-        "backendAddressPool"
+        "backendAddressPool", 
+        "frontendIPConfigurations", 
+        "protocol"
       ],
       "description": "Outbound pool of the load balancer."
     },