diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2019-04-01/webapplicationfirewall.json b/specification/network/resource-manager/Microsoft.Network/stable/2019-04-01/webapplicationfirewall.json
index 04ce53640fe5..6ae7f97265d4 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2019-04-01/webapplicationfirewall.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2019-04-01/webapplicationfirewall.json
@@ -105,9 +105,9 @@
         "x-ms-pageable": {
           "nextLinkName": "nextLink"
         }
-    }
+      }
     },
-    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/ApplicationGatewayWebApplicationFirewallPolicies/{policyName}": {
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/applicationGatewayWebApplicationFirewallPolicies/{policyName}": {
       "get": {
         "tags": [
           "WebApplicationFirewallPolicies"
@@ -277,7 +277,7 @@
       },
       "allOf": [
         {
-            "$ref": "./network.json#/definitions/Resource"
+          "$ref": "./network.json#/definitions/Resource"
         }
       ]
     },
@@ -288,6 +288,10 @@
           "description": "Describes  policySettings for policy",
           "$ref": "#/definitions/PolicySettings"
         },
+        "policyDetailSettings": {
+          "description": "Describes policyDetailSettings for policy",
+          "$ref": "#/definitions/PolicyDetailSettings"
+        },
         "customRules": {
           "description": "Describes custom rules inside the policy",
           "type": "array",
@@ -295,6 +299,10 @@
             "$ref": "#/definitions/WebApplicationFirewallCustomRule"
           }
         },
+        "managedRules": {
+          "description": "Describes managed rules inside the policy",
+          "$ref": "#/definitions/ManagedRuleSets"
+        },
         "applicationGateways": {
           "readOnly": true,
           "type": "array",
@@ -375,6 +383,31 @@
         }
       }
     },
+    "PolicyDetailSettings": {
+      "description": "Defines contents of a web application firewall global detail configuration",
+      "properties": {
+        "requestBodyCheck": {
+          "type": "boolean",
+          "description": "Whether to allow WAF to check request Body."
+        },
+        "maxRequestBodySizeInKb": {
+          "type": "integer",
+          "format": "int32",
+          "maximum": 128,
+          "exclusiveMaximum": false,
+          "minimum": 8,
+          "exclusiveMinimum": false,
+          "description": "Maximum request body size in Kb for WAF."
+        },
+        "fileUploadLimitInMb": {
+          "type": "integer",
+          "format": "int32",
+          "minimum": 0,
+          "exclusiveMinimum": false,
+          "description": "Maximum file upload size in Mb for WAF."
+        }
+      }
+    },
     "WebApplicationFirewallCustomRule": {
       "description": "Defines contents of a web application rule",
       "required": [
@@ -532,6 +565,113 @@
           }
         }
       }
+    },
+    "ManagedRuleSets": {
+      "description": "Defines ManagedRuleSets - array of managedRuleSet",
+      "properties": {
+        "ruleSets": {
+          "description": "List of rules",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/ManagedRuleSet"
+          }
+        }
+      }
+    },
+    "ManagedRuleSet": {
+      "type": "object",
+      "description": "Base class for all types of ManagedRuleSet.",
+      "x-ms-discriminator-value": "Unknown",
+      "properties": {
+        "ruleSetVersion": {
+          "description": "defines version of the rule set",
+          "type": "string"
+        },
+        "ruleSetType": {
+          "description": "RuleSetType - AzureManagedRuleSet or OWASP RuleSets.",
+          "type": "string"
+        }
+      },
+      "required": [
+        "ruleSetType"
+      ],
+      "discriminator": "ruleSetType"
+    },
+    "OWASPRuleSet": {
+      "type": "object",
+      "description": "Describes azure managed provider.",
+      "x-ms-discriminator-value": "OWASPRuleSet",
+      "properties": {
+        "ruleSetConfiguration": {
+          "$ref": "#/definitions/OWASPRuleSetConfiguration",
+          "description": "OWASP rule set configuration."
+        }
+      },
+      "allOf": [
+        {
+          "$ref": "#/definitions/ManagedRuleSet"
+        }
+      ]
+    },
+    "OWASPRuleSetConfiguration": {
+      "properties": {
+        "disabledRuleGroups": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/OWASPRuleSetDisabledRuleGroup"
+          },
+          "description": "The disabled rule groups."
+        },
+        "exclusions": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/OWASPRuleSetExclusion"
+          },
+          "description": "The exclusion list."
+        }
+      },
+      "description": "OWASP rule set configuration."
+    },
+    "OWASPRuleSetDisabledRuleGroup": {
+      "properties": {
+        "ruleGroupName": {
+          "type": "string",
+          "description": "The name of the rule group that will be disabled."
+        },
+        "rules": {
+          "type": "array",
+          "items": {
+            "type": "integer",
+            "format": "int32",
+            "x-nullable": false
+          },
+          "description": "The list of rules that will be disabled. If null, all rules of the rule group will be disabled."
+        }
+      },
+      "required": [
+        "ruleGroupName"
+      ],
+      "description": "Allows to disable rules within a rule group or an entire rule group."
+    },
+    "OWASPRuleSetExclusion": {
+      "properties": {
+        "matchVariable": {
+          "type": "string",
+          "description": "The variable to be excluded."
+        },
+        "selectorMatchOperator": {
+          "type": "string",
+          "description": "When matchVariable is a collection, operate on the selector to specify which elements in the collection this exclusion applies to."
+        },
+        "selector": {
+          "type": "string",
+          "description": "When matchVariable is a collection, operator used to specify which elements in the collection this exclusion applies to."
+        }
+      },
+      "required": [
+        "matchVariable"
+      ],
+      "description": "Allow to exclude some variable satisfy the condition for the WAF check"
     }
   },
   "parameters": {
@@ -550,4 +690,4 @@
       "description": "Client API version."
     }
   }
-}
+}
\ No newline at end of file