diff --git a/azure-rest-api-specs b/azure-rest-api-specs
index 545a9ad7563f..f83281b2fed8 160000
--- a/azure-rest-api-specs
+++ b/azure-rest-api-specs
@@ -1 +1 @@
-Subproject commit 545a9ad7563fe2858d08aba9ee5b8444375d47a9
+Subproject commit f83281b2fed8011962c4e91b7b0270f6391a0832
diff --git a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_CreateOrUpdate.json b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_CreateOrUpdate.json
index 73da0e381c22..16c3ad45709d 100644
--- a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_CreateOrUpdate.json
+++ b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_CreateOrUpdate.json
@@ -36,7 +36,7 @@
           "enableSoftDelete": true,
           "softDeleteRetentionInDays": 90,
           "enablePurgeProtection": true,
-          "hsmPoolUri": null,
+          "hsmUri": null,
           "provisioningState": "Provisioning",
           "statusMessage": "Allocating hardware"
         },
@@ -64,7 +64,7 @@
           "enableSoftDelete": true,
           "softDeleteRetentionInDays": 90,
           "enablePurgeProtection": true,
-          "hsmPoolUri": "https://westus.hsm1.managedhsm.azure.net",
+          "hsmUri": "https://westus.hsm1.managedhsm.azure.net",
           "provisioningState": "Succeeded",
           "statusMessage": "ManagedHsm is functional."
         },
diff --git a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_Get.json b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_Get.json
index 09952f621ce4..9dd9972f3fac 100644
--- a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_Get.json
+++ b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_Get.json
@@ -16,7 +16,7 @@
           "enableSoftDelete": true,
           "softDeleteRetentionInDays": 90,
           "enablePurgeProtection": true,
-          "hsmPoolUri": "https://westus.hsm1.managedhsm.azure.net",
+          "hsmUri": "https://westus.hsm1.managedhsm.azure.net",
           "provisioningState": "Succeeded",
           "statusMessage": "ManagedHsm is functional."
         },
diff --git a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_ListByResourceGroup.json b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_ListByResourceGroup.json
index 52723b08d547..7a3fe9cb1ee9 100644
--- a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_ListByResourceGroup.json
+++ b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_ListByResourceGroup.json
@@ -17,7 +17,7 @@
               "enableSoftDelete": true,
               "softDeleteRetentionInDays": 90,
               "enablePurgeProtection": true,
-              "hsmPoolUri": "https://westus.hsm1.managedhsm.azure.net",
+              "hsmUri": "https://westus.hsm1.managedhsm.azure.net",
               "provisioningState": "Succeeded",
               "statusMessage": "ManagedHsm is functional."
             },
@@ -43,7 +43,7 @@
               "enableSoftDelete": true,
               "softDeleteRetentionInDays": 90,
               "enablePurgeProtection": true,
-              "hsmPoolUri": "https://westus.hsm2.managedhsm.azure.net",
+              "hsmUri": "https://westus.hsm2.managedhsm.azure.net",
               "provisioningState": "Succeeded",
               "statusMessage": "ManagedHsm is functional."
             },
diff --git a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_ListBySubscription.json b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_ListBySubscription.json
index e792f31cecef..63ae1da82161 100644
--- a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_ListBySubscription.json
+++ b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_ListBySubscription.json
@@ -16,7 +16,7 @@
               "enableSoftDelete": true,
               "softDeleteRetentionInDays": 90,
               "enablePurgeProtection": true,
-              "hsmPoolUri": "https://westus.hsm1.managedhsm.azure.net",
+              "hsmUri": "https://westus.hsm1.managedhsm.azure.net",
               "provisioningState": "Succeeded",
               "statusMessage": "ManagedHsm is functional."
             },
@@ -42,7 +42,7 @@
               "enableSoftDelete": true,
               "softDeleteRetentionInDays": 90,
               "enablePurgeProtection": true,
-              "hsmPoolUri": "https://westus.hsm2.managedhsm.azure.net",
+              "hsmUri": "https://westus.hsm2.managedhsm.azure.net",
               "provisioningState": "Succeeded",
               "statusMessage": "ManagedHsm is functional."
             },
diff --git a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_Update.json b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_Update.json
index eaea40a4cefe..ebedabe4e003 100644
--- a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_Update.json
+++ b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/examples/ManagedHsm_Update.json
@@ -23,7 +23,7 @@
           "enableSoftDelete": true,
           "softDeleteRetentionInDays": 90,
           "enablePurgeProtection": true,
-          "hsmPoolUri": "https://westus.hsm1.managedhsm.azure.net",
+          "hsmUri": "https://westus.hsm1.managedhsm.azure.net",
           "provisioningState": "Succeeded",
           "statusMessage": "ManagedHsm is functional."
         },
@@ -52,7 +52,7 @@
           "enableSoftDelete": true,
           "softDeleteRetentionInDays": 90,
           "enablePurgeProtection": true,
-          "hsmPoolUri": "https://westus.hsm1.managedhsm.azure.net",
+          "hsmUri": "https://westus.hsm1.managedhsm.azure.net",
           "provisioningState": "Updating",
           "statusMessage": "ManagedHsm is updating."
         },
diff --git a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/managedHsm.json b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/managedHsm.json
index 7c8276ac052f..34462f6b4514 100644
--- a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/managedHsm.json
+++ b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2020-04-01-preview/managedHsm.json
@@ -51,7 +51,6 @@
             "in": "path",
             "required": true,
             "type": "string",
-            "pattern": "^[a-zA-Z0-9]{3,24}$",
             "description": "Name of the managed HSM Pool"
           },
           {
@@ -112,7 +111,6 @@
             "in": "path",
             "required": true,
             "type": "string",
-            "pattern": "^[a-zA-Z0-9]{3,24}$",
             "description": "Name of the managed HSM Pool"
           },
           {
@@ -393,7 +391,7 @@
           },
           "description": "Array of initial administrators object ids for this managed hsm pool."
         },
-        "hsmPoolUri": {
+        "hsmUri": {
           "type": "string",
           "description": "The URI of the managed hsm pool for performing operations on keys."
         },