diff --git a/nebius/ai/v1/endpoint.proto b/nebius/ai/v1/endpoint.proto
index 2756e74..642fc15 100644
--- a/nebius/ai/v1/endpoint.proto
+++ b/nebius/ai/v1/endpoint.proto
@@ -4,6 +4,7 @@ package nebius.ai.v1;
 
 import "buf/validate/validate.proto";
 import "nebius/annotations.proto";
+import "nebius/common/v1/error.proto";
 import "nebius/common/v1/metadata.proto";
 import "nebius/compute/v1/disk.proto";
 import "nebius/compute/v1/instance.proto";
@@ -401,6 +402,11 @@ message EndpointStateDetails {
 
   // Detailed human-readable description.
   string message = 2;
+
+  // Structured error details for the failure, if available.
+  // For quota-related failures, `service_error.details.quota_failure`
+  // is populated with the quota violations.
+  common.v1.ServiceError service_error = 3;
 }
 
 // EndpointInstanceStatus represents the status of a endpoint instance.
diff --git a/nebius/ai/v1/endpoint_service.proto b/nebius/ai/v1/endpoint_service.proto
index ef00712..b543f82 100644
--- a/nebius/ai/v1/endpoint_service.proto
+++ b/nebius/ai/v1/endpoint_service.proto
@@ -35,6 +35,9 @@ service EndpointService {
   // Starts an endpoint.
   rpc Start(StartEndpointRequest) returns (common.v1.Operation);
 
+  // Restarts an endpoint.
+  rpc Restart(RestartEndpointRequest) returns (common.v1.Operation);
+
   // Stops an endpoint.
   rpc Stop(StopEndpointRequest) returns (common.v1.Operation);
 }
@@ -104,6 +107,15 @@ message StartEndpointRequest {
   ];
 }
 
+message RestartEndpointRequest {
+  string id = 1 [
+    (buf.validate.field).required = true,
+    (nid) = {
+      resource: ["aiendpoint"]
+    }
+  ];
+}
+
 message StopEndpointRequest {
   string id = 1 [
     (buf.validate.field).required = true,
diff --git a/nebius/ai/v1/job.proto b/nebius/ai/v1/job.proto
index d419cb9..3b0be12 100644
--- a/nebius/ai/v1/job.proto
+++ b/nebius/ai/v1/job.proto
@@ -6,6 +6,7 @@ import "buf/validate/validate.proto";
 import "google/protobuf/duration.proto";
 import "google/protobuf/timestamp.proto";
 import "nebius/annotations.proto";
+import "nebius/common/v1/error.proto";
 import "nebius/common/v1/metadata.proto";
 import "nebius/compute/v1/disk.proto";
 import "nebius/compute/v1/instance.proto";
@@ -400,6 +401,11 @@ message JobStateDetails {
 
   // Detailed human-readable description.
   string message = 2;
+
+  // Structured error details for the failure, if available.
+  // For quota-related failures, `service_error.details.quota_failure`
+  // is populated with the quota violations.
+  common.v1.ServiceError service_error = 3;
 }
 
 // JobInstanceStatus represents the status of a job instance.
diff --git a/nebius/ai/v1/job_service.proto b/nebius/ai/v1/job_service.proto
index cff39b2..8e578af 100644
--- a/nebius/ai/v1/job_service.proto
+++ b/nebius/ai/v1/job_service.proto
@@ -34,6 +34,9 @@ service JobService {
 
   // Cancels a job.
   rpc Cancel(CancelJobRequest) returns (common.v1.Operation);
+
+  // Restarts a job.
+  rpc Restart(RestartJobRequest) returns (common.v1.Operation);
 }
 
 message GetJobRequest {
@@ -101,6 +104,15 @@ message CancelJobRequest {
   ];
 }
 
+message RestartJobRequest {
+  string id = 1 [
+    (buf.validate.field).required = true,
+    (nid) = {
+      resource: ["aijob"]
+    }
+  ];
+}
+
 message ListJobsResponse {
   repeated Job items = 1;
 
diff --git a/nebius/capacity/v1/capacity_block_group.proto b/nebius/capacity/v1/capacity_block_group.proto
index 04a09c0..eb5ff26 100644
--- a/nebius/capacity/v1/capacity_block_group.proto
+++ b/nebius/capacity/v1/capacity_block_group.proto
@@ -138,7 +138,10 @@ message CapacityBlockGroup {
   common.v1.ResourceMetadata metadata = 1 [
     (buf.validate.field).required = true,
     (nid) = {
-      parent_resource: ["tenant"]
+      parent_resource: [
+        "tenant",
+        "aitenant"
+      ]
     }
   ];
 
diff --git a/nebius/capacity/v1/capacity_block_group_service.proto b/nebius/capacity/v1/capacity_block_group_service.proto
index 1299745..cbb12fc 100644
--- a/nebius/capacity/v1/capacity_block_group_service.proto
+++ b/nebius/capacity/v1/capacity_block_group_service.proto
@@ -47,7 +47,10 @@ message GetCapacityBlockGroupByResourceAffinityRequest {
   string parent_id = 1 [
     (buf.validate.field).required = true,
     (nid) = {
-      resource: ["tenant"]
+      resource: [
+        "tenant",
+        "aitenant"
+      ]
     }
   ];
 
@@ -65,7 +68,10 @@ message ListCapacityBlockGroupsRequest {
   string parent_id = 1 [
     (buf.validate.field).required = true,
     (nid) = {
-      resource: ["tenant"]
+      resource: [
+        "tenant",
+        "aitenant"
+      ]
     }
   ];
 
diff --git a/nebius/capacity/v1/capacity_interval.proto b/nebius/capacity/v1/capacity_interval.proto
index ad4bbbc..51b0c98 100644
--- a/nebius/capacity/v1/capacity_interval.proto
+++ b/nebius/capacity/v1/capacity_interval.proto
@@ -34,7 +34,10 @@ message CapacityIntervalStatus {
 
   // Tenant ID for which the Capacity Interval is created.
   string container_id = 1 [(nid) = {
-    resource: ["tenant"]
+    resource: [
+      "tenant",
+      "aitenant"
+    ]
   }];
 
   // Name of the region where the Capacity Interval is created.
diff --git a/nebius/mk8s/v1/node_group.proto b/nebius/mk8s/v1/node_group.proto
index c6de60e..34d6548 100644
--- a/nebius/mk8s/v1/node_group.proto
+++ b/nebius/mk8s/v1/node_group.proto
@@ -68,6 +68,11 @@ message NodeGroupSpec {
         id: "node_group_spec.nvlink_autoscaling"
         message: "autoscaling cannot be used for a node group with NVLink"
         expression: "!(has(this.template.nvlink) && has(this.autoscaling))"
+      },
+      {
+        id: "node_group_spec.nvlink_max_surge"
+        message: "max_surge must be 0 for a node group with NVLink"
+        expression: "!has(this.template.nvlink) || !has(this.strategy.max_surge) || (has(this.strategy.max_surge.count) && this.strategy.max_surge.count == 0) || (has(this.strategy.max_surge.percent) && this.strategy.max_surge.percent == 0)"
       }
     ]
   };
diff --git a/nebius/vpc/v1alpha1/network_interface.proto b/nebius/vpc/v1alpha1/network_interface.proto
index 6d49be9..ad16984 100644
--- a/nebius/vpc/v1alpha1/network_interface.proto
+++ b/nebius/vpc/v1alpha1/network_interface.proto
@@ -14,7 +14,6 @@ option java_package = "ai.nebius.pub.vpc.v1alpha1";
 message NetworkInterfaceSpec {
   // Subnet ID
   string subnet_id = 1 [
-    (buf.validate.field).required = true,
     (field_behavior) = IMMUTABLE,
     (nid) = {
       resource: ["vpcsubnet"]
@@ -97,6 +96,12 @@ message NetworkInterfaceStatus {
 
   // MAC address
   string mac_address = 7;
+
+  // Subnet ID actually used by the network interface.
+  // Equals spec.subnet_id when it is provided; otherwise contains the resolved default subnet ID.
+  string subnet_id = 10 [(nid) = {
+    resource: ["vpcsubnet"]
+  }];
 }
 
 message IPAddressStatus {