diff --git a/.codegen/_openapi_sha b/.codegen/_openapi_sha
index 1933662a1..56a87d0cc 100644
--- a/.codegen/_openapi_sha
+++ b/.codegen/_openapi_sha
@@ -1 +1 @@
-5443705509e5ac693d61a35ba974cb7f68f444c6
\ No newline at end of file
+5322ddbb8a8de914d631df350d7a4d91e77edbb7
\ No newline at end of file
diff --git a/NEXT_CHANGELOG.md b/NEXT_CHANGELOG.md
index 4b0fa0c18..8922a6e3c 100644
--- a/NEXT_CHANGELOG.md
+++ b/NEXT_CHANGELOG.md
@@ -18,4 +18,7 @@
 * Add `createCdfConfig()`, `deleteCdfConfig()`, `getCdfConfig()`, `getCdfStatus()`, `listCdfConfigs()` and `listCdfStatuses()` methods for `workspaceClient.postgres()` service.
 * Add `parent` field for `com.databricks.sdk.service.catalog.CreateConnection`.
 * Add `parent` field for `com.databricks.sdk.service.catalog.ListConnectionsRequest`.
-* Add `MINUTES` enum value for `com.databricks.sdk.service.jobs.PeriodicTriggerConfigurationTimeUnit`.
\ No newline at end of file
+* Add `MINUTES` enum value for `com.databricks.sdk.service.jobs.PeriodicTriggerConfigurationTimeUnit`.
+* [Breaking] Change `internalId` field for `com.databricks.sdk.service.iamv2.Group` to type `String` class.
+* [Breaking] Change `internalId` field for `com.databricks.sdk.service.iamv2.ServicePrincipal` to type `String` class.
+* [Breaking] Change `internalId` field for `com.databricks.sdk.service.iamv2.User` to type `String` class.
\ No newline at end of file
diff --git a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/Group.java b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/Group.java
index c956bf858..bf8227eb0 100644
--- a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/Group.java
+++ b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/Group.java
@@ -24,7 +24,7 @@ public class Group {
 
   /** Internal group ID of the group in Databricks. */
   @JsonProperty("internal_id")
-  private Long internalId;
+  private String internalId;
 
   public Group setAccountId(String accountId) {
     this.accountId = accountId;
@@ -53,12 +53,12 @@ public String getGroupName() {
     return groupName;
   }
 
-  public Group setInternalId(Long internalId) {
+  public Group setInternalId(String internalId) {
     this.internalId = internalId;
     return this;
   }
 
-  public Long getInternalId() {
+  public String getInternalId() {
     return internalId;
   }
 
diff --git a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/ServicePrincipal.java b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/ServicePrincipal.java
index 06e3edbe2..9750fb381 100644
--- a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/ServicePrincipal.java
+++ b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/ServicePrincipal.java
@@ -32,7 +32,7 @@ public class ServicePrincipal {
 
   /** Internal service principal ID of the service principal in Databricks. */
   @JsonProperty("internal_id")
-  private Long internalId;
+  private String internalId;
 
   public ServicePrincipal setAccountId(String accountId) {
     this.accountId = accountId;
@@ -79,12 +79,12 @@ public String getExternalId() {
     return externalId;
   }
 
-  public ServicePrincipal setInternalId(Long internalId) {
+  public ServicePrincipal setInternalId(String internalId) {
     this.internalId = internalId;
     return this;
   }
 
-  public Long getInternalId() {
+  public String getInternalId() {
     return internalId;
   }
 
diff --git a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/User.java b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/User.java
index f33c8ab39..3595fd610 100644
--- a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/User.java
+++ b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/iamv2/User.java
@@ -28,7 +28,7 @@ public class User {
 
   /** Internal userId of the user in Databricks. */
   @JsonProperty("internal_id")
-  private Long internalId;
+  private String internalId;
 
   /** Username/email of the user. */
   @JsonProperty("username")
@@ -70,12 +70,12 @@ public UserFullName getFullName() {
     return fullName;
   }
 
-  public User setInternalId(Long internalId) {
+  public User setInternalId(String internalId) {
     this.internalId = internalId;
     return this;
   }
 
-  public Long getInternalId() {
+  public String getInternalId() {
     return internalId;
   }
 
diff --git a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/CreateWarehouseRequest.java b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/CreateWarehouseRequest.java
index 70425ff22..eceace425 100644
--- a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/CreateWarehouseRequest.java
+++ b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/CreateWarehouseRequest.java
@@ -31,7 +31,7 @@ public class CreateWarehouseRequest {
    * queries, please tune max_num_clusters.
    *
    * <p>Supported values: - 2X-Small - X-Small - Small - Medium - Large - X-Large - 2X-Large -
-   * 3X-Large - 4X-Large - 5X-Large - Auto
+   * 3X-Large - 4X-Large - 5X-Large
    */
   @JsonProperty("cluster_size")
   private String clusterSize;
diff --git a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/EditWarehouseRequest.java b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/EditWarehouseRequest.java
index 823cd3f6e..b64211012 100644
--- a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/EditWarehouseRequest.java
+++ b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/EditWarehouseRequest.java
@@ -36,7 +36,7 @@ public class EditWarehouseRequest {
    * queries, please tune max_num_clusters.
    *
    * <p>Supported values: - 2X-Small - X-Small - Small - Medium - Large - X-Large - 2X-Large -
-   * 3X-Large - 4X-Large - 5X-Large - Auto
+   * 3X-Large - 4X-Large - 5X-Large
    */
   @JsonProperty("cluster_size")
   private String clusterSize;
diff --git a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/EndpointInfo.java b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/EndpointInfo.java
index b5aefd8c7..88173f3a0 100644
--- a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/EndpointInfo.java
+++ b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/EndpointInfo.java
@@ -30,7 +30,7 @@ public class EndpointInfo {
    * queries, please tune max_num_clusters.
    *
    * <p>Supported values: - 2X-Small - X-Small - Small - Medium - Large - X-Large - 2X-Large -
-   * 3X-Large - 4X-Large - 5X-Large - Auto
+   * 3X-Large - 4X-Large - 5X-Large
    */
   @JsonProperty("cluster_size")
   private String clusterSize;
diff --git a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/GetWarehouseResponse.java b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/GetWarehouseResponse.java
index be145307d..74bb54bd3 100644
--- a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/GetWarehouseResponse.java
+++ b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/GetWarehouseResponse.java
@@ -30,7 +30,7 @@ public class GetWarehouseResponse {
    * queries, please tune max_num_clusters.
    *
    * <p>Supported values: - 2X-Small - X-Small - Small - Medium - Large - X-Large - 2X-Large -
-   * 3X-Large - 4X-Large - 5X-Large - Auto
+   * 3X-Large - 4X-Large - 5X-Large
    */
   @JsonProperty("cluster_size")
   private String clusterSize;
diff --git a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/StartRequest.java b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/StartRequest.java
index efaa83e4d..3c01ce220 100644
--- a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/StartRequest.java
+++ b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/StartRequest.java
@@ -7,6 +7,7 @@
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import java.util.Objects;
 
+/** Starts a SQL warehouse. This API is idempotent. */
 @Generated
 public class StartRequest {
   /** Required. Id of the SQL warehouse. */
diff --git a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/StopRequest.java b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/StopRequest.java
index d7a07483a..a0dcf9aab 100644
--- a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/StopRequest.java
+++ b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/StopRequest.java
@@ -7,6 +7,7 @@
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import java.util.Objects;
 
+/** Stops a SQL warehouse. This API is idempotent. */
 @Generated
 public class StopRequest {
   /** Required. Id of the SQL warehouse. */
diff --git a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/WarehousesImpl.java b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/WarehousesImpl.java
index b72758d08..475b58999 100644
--- a/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/WarehousesImpl.java
+++ b/databricks-sdk-java/src/main/java/com/databricks/sdk/service/sql/WarehousesImpl.java
@@ -269,10 +269,11 @@ public void setWorkspaceWarehouseConfig(SetWorkspaceWarehouseConfigRequest reque
   public void start(StartRequest request) {
     String path = String.format("/api/2.0/sql/warehouses/%s/start", request.getId());
     try {
-      Request req = new Request("POST", path);
+      Request req = new Request("POST", path, apiClient.serialize(request));
 
       ApiClient.setQuery(req, request);
       req.withHeader("Accept", "application/json");
+      req.withHeader("Content-Type", "application/json");
       if (apiClient.workspaceId() != null) {
         req.withHeader("X-Databricks-Workspace-Id", apiClient.workspaceId());
       }
@@ -286,10 +287,11 @@ public void start(StartRequest request) {
   public void stop(StopRequest request) {
     String path = String.format("/api/2.0/sql/warehouses/%s/stop", request.getId());
     try {
-      Request req = new Request("POST", path);
+      Request req = new Request("POST", path, apiClient.serialize(request));
 
       ApiClient.setQuery(req, request);
       req.withHeader("Accept", "application/json");
+      req.withHeader("Content-Type", "application/json");
       if (apiClient.workspaceId() != null) {
         req.withHeader("X-Databricks-Workspace-Id", apiClient.workspaceId());
       }