diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 47fd8ad4bae6..b4e6db966fc6 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -17308,7 +17308,7 @@ importers:
         version: 4.13.1
       '@azure/keyvault-certificates':
         specifier: ^4.9.0
-        version: link:../keyvault-certificates
+        version: 4.10.3
       dotenv:
         specifier: ^16.0.0
         version: 16.6.1
@@ -34509,6 +34509,10 @@ packages:
     resolution: {integrity: sha1-vcCRZYuqWaR+6furSHpLsBhym8M=}
     engines: {node: '>=20.0.0'}
 
+  '@azure/keyvault-certificates@4.10.3':
+    resolution: {integrity: sha1-xv78JrnQG9ECOHL6sv0HYRyb6ZQ=}
+    engines: {node: '>=20.0.0'}
+
   '@azure/keyvault-common@2.1.0':
     resolution: {integrity: sha1-Zw50FKK/aDcbCz0fmByboCeLd90=}
     engines: {node: '>=20.0.0'}
@@ -40669,6 +40673,22 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@azure/keyvault-certificates@4.10.3':
+    dependencies:
+      '@azure-rest/core-client': 2.6.0
+      '@azure/abort-controller': 2.1.2
+      '@azure/core-auth': 1.10.1
+      '@azure/core-lro': 2.7.2
+      '@azure/core-paging': 1.6.2
+      '@azure/core-rest-pipeline': link:sdk/core/core-rest-pipeline
+      '@azure/core-tracing': 1.3.1
+      '@azure/core-util': 1.13.1
+      '@azure/keyvault-common': 2.1.0
+      '@azure/logger': 1.3.0
+      tslib: 2.8.1
+    transitivePeerDependencies:
+      - supports-color
+
   '@azure/keyvault-common@2.1.0':
     dependencies:
       '@azure-rest/core-client': 2.6.0
diff --git a/sdk/containerservice/arm-containerservicefleet/CHANGELOG.md b/sdk/containerservice/arm-containerservicefleet/CHANGELOG.md
index 7d5f18d6314e..97623c00cb82 100644
--- a/sdk/containerservice/arm-containerservicefleet/CHANGELOG.md
+++ b/sdk/containerservice/arm-containerservicefleet/CHANGELOG.md
@@ -1,5 +1,138 @@
 # Release History
 
+## 2.1.0-beta.5 (2026-06-03)
+Compared with version 2.0.0
+
+### Features Added
+  - Added operation group ClusterMeshProfilesOperations
+  - Added operation group FleetManagedNamespacesOperations
+  - Added operation group GatesOperations
+  - Added Interface Affinity
+  - Added Interface CiliumProperties
+  - Added Interface ClusterAffinity
+  - Added Interface ClusterMeshProfile
+  - Added Interface ClusterMeshProfileProperties
+  - Added Interface ClusterMeshProfilesApplyOptionalParams
+  - Added Interface ClusterMeshProfilesCreateOrUpdateOptionalParams
+  - Added Interface ClusterMeshProfilesDeleteOptionalParams
+  - Added Interface ClusterMeshProfilesGetOptionalParams
+  - Added Interface ClusterMeshProfilesListByFleetOptionalParams
+  - Added Interface ClusterMeshProfileStatus
+  - Added Interface ClusterResourcePlacementSpec
+  - Added Interface ClusterSelector
+  - Added Interface ClusterSelectorTerm
+  - Added Interface FleetManagedNamespace
+  - Added Interface FleetManagedNamespacePatch
+  - Added Interface FleetManagedNamespaceProperties
+  - Added Interface FleetManagedNamespacesCreateOrUpdateOptionalParams
+  - Added Interface FleetManagedNamespacesDeleteOptionalParams
+  - Added Interface FleetManagedNamespacesGetOptionalParams
+  - Added Interface FleetManagedNamespacesListByFleetOptionalParams
+  - Added Interface FleetManagedNamespaceStatus
+  - Added Interface FleetManagedNamespacesUpdateOptionalParams
+  - Added Interface Gate
+  - Added Interface GateConfiguration
+  - Added Interface GatePatch
+  - Added Interface GatePatchProperties
+  - Added Interface GateProperties
+  - Added Interface GatesGetOptionalParams
+  - Added Interface GatesListByFleetOptionalParams
+  - Added Interface GatesUpdateOptionalParams
+  - Added Interface GateTarget
+  - Added Interface LabelSelector
+  - Added Interface LabelSelectorRequirement
+  - Added Interface ManagedNamespaceProperties
+  - Added Interface MemberSelector
+  - Added Interface MeshMemberStatus
+  - Added Interface MeshProperties
+  - Added Interface NetworkPolicy
+  - Added Interface PlacementPolicy
+  - Added Interface PlacementProfile
+  - Added Interface PropagationPolicy
+  - Added Interface PropertySelector
+  - Added Interface PropertySelectorRequirement
+  - Added Interface ResourceQuota
+  - Added Interface Toleration
+  - Added Interface UpdateRunGateStatus
+  - Added Interface UpdateRunGateTargetProperties
+  - Interface AutoUpgradeProfileProperties has a new optional parameter longTermSupport
+  - Interface AutoUpgradeProfileProperties has a new optional parameter targetKubernetesVersion
+  - Interface AutoUpgradeProfilesListByFleetOptionalParams has a new optional parameter skipToken
+  - Interface AutoUpgradeProfilesListByFleetOptionalParams has a new optional parameter top
+  - Interface ContainerServiceFleetClientOptionalParams has a new optional parameter cloudSetting
+  - Interface FleetMemberProperties has a new optional parameter labels
+  - Interface FleetMemberProperties has a new optional parameter meshProperties
+  - Interface FleetMembersListByFleetOptionalParams has a new optional parameter filter
+  - Interface FleetMembersListByFleetOptionalParams has a new optional parameter skipToken
+  - Interface FleetMembersListByFleetOptionalParams has a new optional parameter top
+  - Interface FleetMemberUpdateProperties has a new optional parameter labels
+  - Interface FleetsListBySubscriptionOptionalParams has a new optional parameter skipToken
+  - Interface FleetsListBySubscriptionOptionalParams has a new optional parameter top
+  - Interface FleetUpdateStrategiesListByFleetOptionalParams has a new optional parameter skipToken
+  - Interface FleetUpdateStrategiesListByFleetOptionalParams has a new optional parameter top
+  - Interface UpdateGroup has a new optional parameter afterGates
+  - Interface UpdateGroup has a new optional parameter beforeGates
+  - Interface UpdateGroup has a new optional parameter maxConcurrency
+  - Interface UpdateGroupStatus has a new optional parameter afterGates
+  - Interface UpdateGroupStatus has a new optional parameter beforeGates
+  - Interface UpdateGroupStatus has a new optional parameter maxConcurrency
+  - Interface UpdateRunsListByFleetOptionalParams has a new optional parameter skipToken
+  - Interface UpdateRunsListByFleetOptionalParams has a new optional parameter top
+  - Interface UpdateStage has a new optional parameter afterGates
+  - Interface UpdateStage has a new optional parameter beforeGates
+  - Interface UpdateStage has a new optional parameter maxConcurrency
+  - Interface UpdateStageStatus has a new optional parameter afterGates
+  - Interface UpdateStageStatus has a new optional parameter beforeGates
+  - Interface UpdateStageStatus has a new optional parameter maxConcurrency
+  - Added Type Alias AdoptionPolicy
+  - Added Type Alias AzureSupportedClouds
+  - Added Type Alias ClusterMeshProfileProvisioningState
+  - Added Type Alias ClusterMeshState
+  - Added Type Alias DeletePolicy
+  - Added Type Alias FleetManagedNamespaceProvisioningState
+  - Added Type Alias GateProvisioningState
+  - Added Type Alias GateState
+  - Added Type Alias GateType
+  - Added Type Alias LabelSelectorOperator
+  - Added Type Alias MeshMemberState
+  - Added Type Alias PlacementType
+  - Added Type Alias PolicyRule
+  - Added Type Alias PropagationType
+  - Added Type Alias PropertySelectorOperator
+  - Added Type Alias TaintEffect
+  - Added Type Alias Timing
+  - Added Type Alias TolerationOperator
+  - Added Enum AzureClouds
+  - Added Enum KnownAdoptionPolicy
+  - Added Enum KnownClusterMeshProfileProvisioningState
+  - Added Enum KnownClusterMeshState
+  - Added Enum KnownDeletePolicy
+  - Added Enum KnownFleetManagedNamespaceProvisioningState
+  - Added Enum KnownGateProvisioningState
+  - Added Enum KnownGateState
+  - Added Enum KnownGateType
+  - Added Enum KnownLabelSelectorOperator
+  - Added Enum KnownMeshMemberState
+  - Added Enum KnownPlacementType
+  - Added Enum KnownPolicyRule
+  - Added Enum KnownPropagationType
+  - Added Enum KnownPropertySelectorOperator
+  - Added Enum KnownTaintEffect
+  - Added Enum KnownTiming
+  - Added Enum KnownTolerationOperator
+  - Enum KnownUpdateState has a new value Pending
+  - Enum KnownUpgradeChannel has a new value TargetKubernetesVersion
+  - Enum KnownVersions has a new value V20220902Preview
+  - Enum KnownVersions has a new value V20230315Preview
+  - Enum KnownVersions has a new value V20230615Preview
+  - Enum KnownVersions has a new value V20230815Preview
+  - Enum KnownVersions has a new value V20240202Preview
+  - Enum KnownVersions has a new value V20240502Preview
+  - Enum KnownVersions has a new value V20250401Preview
+  - Enum KnownVersions has a new value V20250801Preview
+  - Enum KnownVersions has a new value V20260201Preview
+  - Enum KnownVersions has a new value V20260302Preview
+
 ## 2.1.0-beta.4 (2026-05-28)
 Compared with version 2.0.0
 
diff --git a/sdk/containerservice/arm-containerservicefleet/metadata.json b/sdk/containerservice/arm-containerservicefleet/metadata.json
index f8457575b902..7804258cc6be 100644
--- a/sdk/containerservice/arm-containerservicefleet/metadata.json
+++ b/sdk/containerservice/arm-containerservicefleet/metadata.json
@@ -2,7 +2,7 @@
   "apiVersions": {
     "Microsoft.ContainerService": "2026-03-02-preview"
   },
-  "emitterVersion": "0.53.3",
+  "emitterVersion": "0.54.0",
   "crossLanguageDefinitions": {
     "CrossLanguagePackageId": "Microsoft.ContainerService",
     "CrossLanguageDefinitionId": {
diff --git a/sdk/containerservice/arm-containerservicefleet/package.json b/sdk/containerservice/arm-containerservicefleet/package.json
index 04a09d44f321..1cf006cc398a 100644
--- a/sdk/containerservice/arm-containerservicefleet/package.json
+++ b/sdk/containerservice/arm-containerservicefleet/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@azure/arm-containerservicefleet",
-  "version": "2.1.0-beta.4",
+  "version": "2.1.0-beta.5",
   "description": "A generated SDK for ContainerServiceFleetClient.",
   "engines": {
     "node": ">=20.0.0"
diff --git a/sdk/containerservice/arm-containerservicefleet/src/api/autoUpgradeProfileOperations/operations.ts b/sdk/containerservice/arm-containerservicefleet/src/api/autoUpgradeProfileOperations/operations.ts
index 864da4ec9c90..6919079d899a 100644
--- a/sdk/containerservice/arm-containerservicefleet/src/api/autoUpgradeProfileOperations/operations.ts
+++ b/sdk/containerservice/arm-containerservicefleet/src/api/autoUpgradeProfileOperations/operations.ts
@@ -43,7 +43,9 @@ export async function _generateUpdateRunDeserialize(
   const expectedStatuses = ["200", "202", "201"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
diff --git a/sdk/containerservice/arm-containerservicefleet/src/api/autoUpgradeProfiles/operations.ts b/sdk/containerservice/arm-containerservicefleet/src/api/autoUpgradeProfiles/operations.ts
index 888022d0b6cb..7bfed6a2f4c0 100644
--- a/sdk/containerservice/arm-containerservicefleet/src/api/autoUpgradeProfiles/operations.ts
+++ b/sdk/containerservice/arm-containerservicefleet/src/api/autoUpgradeProfiles/operations.ts
@@ -55,7 +55,9 @@ export async function _listByFleetDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -116,7 +118,9 @@ export async function _$deleteDeserialize(result: PathUncheckedResponse): Promis
   const expectedStatuses = ["202", "204", "200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -182,7 +186,9 @@ export async function _createOrUpdateDeserialize(
   const expectedStatuses = ["200", "201", "202"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -246,7 +252,9 @@ export async function _getDeserialize(result: PathUncheckedResponse): Promise<Au
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
diff --git a/sdk/containerservice/arm-containerservicefleet/src/api/clusterMeshProfiles/operations.ts b/sdk/containerservice/arm-containerservicefleet/src/api/clusterMeshProfiles/operations.ts
index 2487bca2ba9a..14b7e067ecf7 100644
--- a/sdk/containerservice/arm-containerservicefleet/src/api/clusterMeshProfiles/operations.ts
+++ b/sdk/containerservice/arm-containerservicefleet/src/api/clusterMeshProfiles/operations.ts
@@ -60,7 +60,9 @@ export async function _applyDeserialize(
   const expectedStatuses = ["200", "202", "201"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -116,7 +118,9 @@ export async function _listByFleetDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -177,7 +181,9 @@ export async function _$deleteDeserialize(result: PathUncheckedResponse): Promis
   const expectedStatuses = ["202", "204", "200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -243,7 +249,9 @@ export async function _createOrUpdateDeserialize(
   const expectedStatuses = ["200", "201", "202"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -307,7 +315,9 @@ export async function _getDeserialize(result: PathUncheckedResponse): Promise<Cl
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
diff --git a/sdk/containerservice/arm-containerservicefleet/src/api/containerServiceFleetContext.ts b/sdk/containerservice/arm-containerservicefleet/src/api/containerServiceFleetContext.ts
index e5a54c7117a8..3a1db39e6f84 100644
--- a/sdk/containerservice/arm-containerservicefleet/src/api/containerServiceFleetContext.ts
+++ b/sdk/containerservice/arm-containerservicefleet/src/api/containerServiceFleetContext.ts
@@ -36,7 +36,7 @@ export function createContainerServiceFleet(
   const endpointUrl =
     options.endpoint ?? getArmEndpoint(options.cloudSetting) ?? "https://management.azure.com";
   const prefixFromOptions = options?.userAgentOptions?.userAgentPrefix;
-  const userAgentInfo = `azsdk-js-arm-containerservicefleet/2.1.0-beta.4`;
+  const userAgentInfo = `azsdk-js-arm-containerservicefleet/2.1.0-beta.5`;
   const userAgentPrefix = prefixFromOptions
     ? `${prefixFromOptions} azsdk-js-api ${userAgentInfo}`
     : `azsdk-js-api ${userAgentInfo}`;
diff --git a/sdk/containerservice/arm-containerservicefleet/src/api/fleetManagedNamespaces/operations.ts b/sdk/containerservice/arm-containerservicefleet/src/api/fleetManagedNamespaces/operations.ts
index 61655c274a95..53ae9823c95b 100644
--- a/sdk/containerservice/arm-containerservicefleet/src/api/fleetManagedNamespaces/operations.ts
+++ b/sdk/containerservice/arm-containerservicefleet/src/api/fleetManagedNamespaces/operations.ts
@@ -68,7 +68,9 @@ export async function _updateDeserialize(
   const expectedStatuses = ["200", "202", "201"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -125,7 +127,9 @@ export async function _listByFleetDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -186,7 +190,9 @@ export async function _$deleteDeserialize(result: PathUncheckedResponse): Promis
   const expectedStatuses = ["202", "204", "200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -252,7 +258,9 @@ export async function _createOrUpdateDeserialize(
   const expectedStatuses = ["200", "201", "202"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -318,7 +326,9 @@ export async function _getDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
diff --git a/sdk/containerservice/arm-containerservicefleet/src/api/fleetMembers/operations.ts b/sdk/containerservice/arm-containerservicefleet/src/api/fleetMembers/operations.ts
index 5af31f48c6b7..aa06ecdbc3fb 100644
--- a/sdk/containerservice/arm-containerservicefleet/src/api/fleetMembers/operations.ts
+++ b/sdk/containerservice/arm-containerservicefleet/src/api/fleetMembers/operations.ts
@@ -62,7 +62,9 @@ export async function _listByFleetDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -123,7 +125,9 @@ export async function _$deleteDeserialize(result: PathUncheckedResponse): Promis
   const expectedStatuses = ["200", "202", "204"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -186,7 +190,9 @@ export async function _updateAsyncDeserialize(result: PathUncheckedResponse): Pr
   const expectedStatuses = ["200", "202", "201"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -251,7 +257,9 @@ export async function _createDeserialize(result: PathUncheckedResponse): Promise
   const expectedStatuses = ["200", "201", "202"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -308,7 +316,9 @@ export async function _getDeserialize(result: PathUncheckedResponse): Promise<Fl
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
diff --git a/sdk/containerservice/arm-containerservicefleet/src/api/fleetUpdateStrategies/operations.ts b/sdk/containerservice/arm-containerservicefleet/src/api/fleetUpdateStrategies/operations.ts
index 797e152eec28..376cbe9ec167 100644
--- a/sdk/containerservice/arm-containerservicefleet/src/api/fleetUpdateStrategies/operations.ts
+++ b/sdk/containerservice/arm-containerservicefleet/src/api/fleetUpdateStrategies/operations.ts
@@ -55,7 +55,9 @@ export async function _listByFleetDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -116,7 +118,9 @@ export async function _$deleteDeserialize(result: PathUncheckedResponse): Promis
   const expectedStatuses = ["200", "202", "204"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -182,7 +186,9 @@ export async function _createOrUpdateDeserialize(
   const expectedStatuses = ["200", "201", "202"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -246,7 +252,9 @@ export async function _getDeserialize(result: PathUncheckedResponse): Promise<Fl
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
diff --git a/sdk/containerservice/arm-containerservicefleet/src/api/fleets/operations.ts b/sdk/containerservice/arm-containerservicefleet/src/api/fleets/operations.ts
index 906e945282c5..e338b5b2452c 100644
--- a/sdk/containerservice/arm-containerservicefleet/src/api/fleets/operations.ts
+++ b/sdk/containerservice/arm-containerservicefleet/src/api/fleets/operations.ts
@@ -63,7 +63,9 @@ export async function _listCredentialsDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -110,7 +112,9 @@ export async function _listBySubscriptionDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -164,7 +168,9 @@ export async function _listByResourceGroupDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -222,7 +228,9 @@ export async function _$deleteDeserialize(result: PathUncheckedResponse): Promis
   const expectedStatuses = ["200", "202", "204"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -281,7 +289,9 @@ export async function _updateAsyncDeserialize(result: PathUncheckedResponse): Pr
   const expectedStatuses = ["200", "202", "201"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -343,7 +353,9 @@ export async function _createDeserialize(result: PathUncheckedResponse): Promise
   const expectedStatuses = ["200", "201", "202"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -396,7 +408,9 @@ export async function _getDeserialize(result: PathUncheckedResponse): Promise<Fl
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
diff --git a/sdk/containerservice/arm-containerservicefleet/src/api/gates/operations.ts b/sdk/containerservice/arm-containerservicefleet/src/api/gates/operations.ts
index 8802a493a123..2841f1faebf8 100644
--- a/sdk/containerservice/arm-containerservicefleet/src/api/gates/operations.ts
+++ b/sdk/containerservice/arm-containerservicefleet/src/api/gates/operations.ts
@@ -55,7 +55,9 @@ export async function _listByFleetDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -121,7 +123,9 @@ export async function _updateDeserialize(result: PathUncheckedResponse): Promise
   const expectedStatuses = ["200", "202", "201"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -178,7 +182,9 @@ export async function _getDeserialize(result: PathUncheckedResponse): Promise<Ga
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
diff --git a/sdk/containerservice/arm-containerservicefleet/src/api/operations/operations.ts b/sdk/containerservice/arm-containerservicefleet/src/api/operations/operations.ts
index 856cf77d7e74..2a0b4aa427a0 100644
--- a/sdk/containerservice/arm-containerservicefleet/src/api/operations/operations.ts
+++ b/sdk/containerservice/arm-containerservicefleet/src/api/operations/operations.ts
@@ -39,7 +39,9 @@ export async function _listDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
diff --git a/sdk/containerservice/arm-containerservicefleet/src/api/updateRuns/operations.ts b/sdk/containerservice/arm-containerservicefleet/src/api/updateRuns/operations.ts
index 54b4f7d32b11..1ba90e2e9a69 100644
--- a/sdk/containerservice/arm-containerservicefleet/src/api/updateRuns/operations.ts
+++ b/sdk/containerservice/arm-containerservicefleet/src/api/updateRuns/operations.ts
@@ -64,7 +64,9 @@ export async function _skipDeserialize(result: PathUncheckedResponse): Promise<U
   const expectedStatuses = ["200", "202", "201"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -125,7 +127,9 @@ export async function _stopDeserialize(result: PathUncheckedResponse): Promise<U
   const expectedStatuses = ["200", "202", "201"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -185,7 +189,9 @@ export async function _startDeserialize(result: PathUncheckedResponse): Promise<
   const expectedStatuses = ["200", "202", "201"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -243,7 +249,9 @@ export async function _listByFleetDeserialize(
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -304,7 +312,9 @@ export async function _$deleteDeserialize(result: PathUncheckedResponse): Promis
   const expectedStatuses = ["200", "202", "204"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -370,7 +380,9 @@ export async function _createOrUpdateDeserialize(
   const expectedStatuses = ["200", "201", "202"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
@@ -427,7 +439,9 @@ export async function _getDeserialize(result: PathUncheckedResponse): Promise<Up
   const expectedStatuses = ["200"];
   if (!expectedStatuses.includes(result.status)) {
     const error = createRestError(result);
-    error.details = errorResponseDeserializer(result.body);
+    if (result.body) {
+      error.details = errorResponseDeserializer(result.body);
+    }
 
     throw error;
   }
diff --git a/sdk/containerservice/arm-containerservicefleet/tsp-location.yaml b/sdk/containerservice/arm-containerservicefleet/tsp-location.yaml
index 6da9fdc3b3b9..8121d905401a 100644
--- a/sdk/containerservice/arm-containerservicefleet/tsp-location.yaml
+++ b/sdk/containerservice/arm-containerservicefleet/tsp-location.yaml
@@ -1,4 +1,4 @@
 directory: specification/containerservice/resource-manager/Microsoft.ContainerService/fleet
-commit: cb62053a18882dd258d9922be9770702b7ef6ac9
+commit: 12298b320b934ec7ba8ee2ac2a18f6d6c3395e2c
 repo: Azure/azure-rest-api-specs
 additionalDirectories: