diff --git a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-01-preview/examples/ServerRestartWithFailover.json b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-01-preview/examples/ServerRestartWithFailover.json
index fdb11d0b1e70..1bd243151993 100644
--- a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-01-preview/examples/ServerRestartWithFailover.json
+++ b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-01-preview/examples/ServerRestartWithFailover.json
@@ -6,7 +6,7 @@
     "subscriptionId": "ffffffff-ffff-ffff-ffff-ffffffffffff",
     "parameters": {
       "restartWithFailover": true,
-      "failoverMode": "forcedFailover"
+      "failoverMode": "ForcedFailover"
     }
   },
   "responses": {
diff --git a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-01-preview/postgresql.json b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-01-preview/postgresql.json
index 566ba6bb956a..253af0941bb2 100644
--- a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-01-preview/postgresql.json
+++ b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-01-preview/postgresql.json
@@ -2021,7 +2021,17 @@
         },
         "failoverMode": {
           "type": "string",
-          "description": "Failover mode."
+          "description": "Failover mode.",
+          "enum": [
+            "PlannedFailover",
+            "ForcedFailover",
+            "PlannedSwitchover",
+            "ForcedSwitchover"
+          ],
+          "x-ms-enum": {
+            "name": "FailoverMode",
+            "modelAsString": true
+          }
         }
       },
       "description": "Represents server restart parameters."
diff --git a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-15-privatepreview/examples/ServerRestartWithFailover.json b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-15-privatepreview/examples/ServerRestartWithFailover.json
index d928707a0575..c1fe54619905 100644
--- a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-15-privatepreview/examples/ServerRestartWithFailover.json
+++ b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-15-privatepreview/examples/ServerRestartWithFailover.json
@@ -6,7 +6,7 @@
     "subscriptionId": "ffffffff-ffff-ffff-ffff-ffffffffffff",
     "parameters": {
       "restartWithFailover": true,
-      "failoverMode": "forcedFailover"
+      "failoverMode": "ForcedFailover"
     }
   },
   "responses": {
diff --git a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-15-privatepreview/postgresql.json b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-15-privatepreview/postgresql.json
index 5c6b70dd81ad..89dd34aa0680 100644
--- a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-15-privatepreview/postgresql.json
+++ b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2021-06-15-privatepreview/postgresql.json
@@ -2044,7 +2044,17 @@
         },
         "failoverMode": {
           "type": "string",
-          "description": "Failover mode."
+          "description": "Failover mode.",
+          "enum": [
+            "PlannedFailover",
+            "ForcedFailover",
+            "PlannedSwitchover",
+            "ForcedSwitchover"
+          ],
+          "x-ms-enum": {
+            "name": "FailoverMode",
+            "modelAsString": true
+          }
         }
       },
       "description": "Represents server restart parameters."
diff --git a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/stable/2021-06-01/examples/ServerRestartWithFailover.json b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/stable/2021-06-01/examples/ServerRestartWithFailover.json
index f8f484379769..181ce503092d 100644
--- a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/stable/2021-06-01/examples/ServerRestartWithFailover.json
+++ b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/stable/2021-06-01/examples/ServerRestartWithFailover.json
@@ -6,7 +6,7 @@
     "subscriptionId": "ffffffff-ffff-ffff-ffff-ffffffffffff",
     "parameters": {
       "restartWithFailover": true,
-      "failoverMode": "forcedFailover"
+      "failoverMode": "ForcedFailover"
     }
   },
   "responses": {
diff --git a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/stable/2021-06-01/postgresql.json b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/stable/2021-06-01/postgresql.json
index 7771cb9a91ac..03b5b297e044 100644
--- a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/stable/2021-06-01/postgresql.json
+++ b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/stable/2021-06-01/postgresql.json
@@ -2021,7 +2021,17 @@
         },
         "failoverMode": {
           "type": "string",
-          "description": "Failover mode."
+          "description": "Failover mode.",
+          "enum": [
+            "PlannedFailover",
+            "ForcedFailover",
+            "PlannedSwitchover",
+            "ForcedSwitchover"
+          ],
+          "x-ms-enum": {
+            "name": "FailoverMode",
+            "modelAsString": true
+          }
         }
       },
       "description": "Represents server restart parameters."