diff --git a/clients/client-rds/src/commands/CopyDBClusterParameterGroupCommand.ts b/clients/client-rds/src/commands/CopyDBClusterParameterGroupCommand.ts
index 957502ec3141..784e959580d7 100644
--- a/clients/client-rds/src/commands/CopyDBClusterParameterGroupCommand.ts
+++ b/clients/client-rds/src/commands/CopyDBClusterParameterGroupCommand.ts
@@ -38,6 +38,10 @@ export interface CopyDBClusterParameterGroupCommandOutput extends CopyDBClusterP
 /**
  * @public
  * <p>Copies the specified DB cluster parameter group.</p>
+ *          <note>
+ *             <p>You can't copy a default DB cluster parameter group. Instead, create a new custom DB cluster parameter group, which copies
+ *                 the default parameters and values for the specified DB cluster parameter group family.</p>
+ *          </note>
  * @example
  * Use a bare-bones client and the command you need to make an API call.
  * ```javascript
diff --git a/clients/client-rds/src/commands/CopyDBParameterGroupCommand.ts b/clients/client-rds/src/commands/CopyDBParameterGroupCommand.ts
index fef5f589a73d..d3c8221b9665 100644
--- a/clients/client-rds/src/commands/CopyDBParameterGroupCommand.ts
+++ b/clients/client-rds/src/commands/CopyDBParameterGroupCommand.ts
@@ -38,6 +38,10 @@ export interface CopyDBParameterGroupCommandOutput extends CopyDBParameterGroupR
 /**
  * @public
  * <p>Copies the specified DB parameter group.</p>
+ *          <note>
+ *             <p>You can't copy a default DB parameter group. Instead, create a new custom DB parameter group, which copies the default
+ *                 parameters and values for the specified DB parameter group family.</p>
+ *          </note>
  * @example
  * Use a bare-bones client and the command you need to make an API call.
  * ```javascript
diff --git a/clients/client-rds/src/commands/CreateDBClusterCommand.ts b/clients/client-rds/src/commands/CreateDBClusterCommand.ts
index d901f0ab0a90..959a55312555 100644
--- a/clients/client-rds/src/commands/CreateDBClusterCommand.ts
+++ b/clients/client-rds/src/commands/CreateDBClusterCommand.ts
@@ -106,6 +106,7 @@ export interface CreateDBClusterCommandOutput extends CreateDBClusterResult, __M
  *   RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  *     InterconnectSubnetId: "STRING_VALUE",
  *     TransitGatewayMulticastDomainId: "STRING_VALUE",
+ *     ReplicaMode: "open-read-only" || "mounted",
  *   },
  *   DeletionProtection: true || false,
  *   GlobalClusterIdentifier: "STRING_VALUE",
@@ -176,6 +177,14 @@ export interface CreateDBClusterCommandOutput extends CreateDBClusterResult, __M
  * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //       "STRING_VALUE",
  * //     ],
+ * //     StatusInfos: [ // DBClusterStatusInfoList
+ * //       { // DBClusterStatusInfo
+ * //         StatusType: "STRING_VALUE",
+ * //         Normal: true || false,
+ * //         Status: "STRING_VALUE",
+ * //         Message: "STRING_VALUE",
+ * //       },
+ * //     ],
  * //     DBClusterMembers: [ // DBClusterMemberList
  * //       { // DBClusterMember
  * //         DBInstanceIdentifier: "STRING_VALUE",
@@ -224,6 +233,7 @@ export interface CreateDBClusterCommandOutput extends CreateDBClusterResult, __M
  * //     RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //       InterconnectSubnetId: "STRING_VALUE",
  * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //       ReplicaMode: "open-read-only" || "mounted",
  * //     },
  * //     DeletionProtection: true || false,
  * //     HttpEndpointEnabled: true || false,
@@ -272,6 +282,7 @@ export interface CreateDBClusterCommandOutput extends CreateDBClusterResult, __M
  * //       RdsCustomClusterConfiguration: {
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       Iops: Number("int"),
  * //       StorageType: "STRING_VALUE",
@@ -356,6 +367,10 @@ export interface CreateDBClusterCommandOutput extends CreateDBClusterResult, __M
  * @throws {@link InvalidDBInstanceStateFault} (client fault)
  *  <p>The DB instance isn't in a valid state.</p>
  *
+ * @throws {@link InvalidDBSubnetGroupFault} (client fault)
+ *  <p>The DBSubnetGroup doesn't belong to the same VPC as that of an existing
+ *             cross-region read replica of the same source instance.</p>
+ *
  * @throws {@link InvalidDBSubnetGroupStateFault} (client fault)
  *  <p>The DB subnet group cannot be deleted because it's in use.</p>
  *
@@ -372,6 +387,9 @@ export interface CreateDBClusterCommandOutput extends CreateDBClusterResult, __M
  * @throws {@link KMSKeyNotAccessibleFault} (client fault)
  *  <p>An error occurred accessing an Amazon Web Services KMS key.</p>
  *
+ * @throws {@link OptionGroupNotFoundFault} (client fault)
+ *  <p>The specified option group could not be found.</p>
+ *
  * @throws {@link StorageQuotaExceededFault} (client fault)
  *  <p>The request would result in the user exceeding the allowed amount of storage
  *             available across all DB instances.</p>
diff --git a/clients/client-rds/src/commands/DeleteDBClusterCommand.ts b/clients/client-rds/src/commands/DeleteDBClusterCommand.ts
index 8a6502db6e8e..56c48692f5ee 100644
--- a/clients/client-rds/src/commands/DeleteDBClusterCommand.ts
+++ b/clients/client-rds/src/commands/DeleteDBClusterCommand.ts
@@ -101,6 +101,14 @@ export interface DeleteDBClusterCommandOutput extends DeleteDBClusterResult, __M
  * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //       "STRING_VALUE",
  * //     ],
+ * //     StatusInfos: [ // DBClusterStatusInfoList
+ * //       { // DBClusterStatusInfo
+ * //         StatusType: "STRING_VALUE",
+ * //         Normal: true || false,
+ * //         Status: "STRING_VALUE",
+ * //         Message: "STRING_VALUE",
+ * //       },
+ * //     ],
  * //     DBClusterMembers: [ // DBClusterMemberList
  * //       { // DBClusterMember
  * //         DBInstanceIdentifier: "STRING_VALUE",
@@ -149,6 +157,7 @@ export interface DeleteDBClusterCommandOutput extends DeleteDBClusterResult, __M
  * //     RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //       InterconnectSubnetId: "STRING_VALUE",
  * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //       ReplicaMode: "open-read-only" || "mounted",
  * //     },
  * //     DeletionProtection: true || false,
  * //     HttpEndpointEnabled: true || false,
@@ -197,6 +206,7 @@ export interface DeleteDBClusterCommandOutput extends DeleteDBClusterResult, __M
  * //       RdsCustomClusterConfiguration: {
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       Iops: Number("int"),
  * //       StorageType: "STRING_VALUE",
diff --git a/clients/client-rds/src/commands/DescribeDBClusterAutomatedBackupsCommand.ts b/clients/client-rds/src/commands/DescribeDBClusterAutomatedBackupsCommand.ts
index d3c05a328844..f1ead17cd577 100644
--- a/clients/client-rds/src/commands/DescribeDBClusterAutomatedBackupsCommand.ts
+++ b/clients/client-rds/src/commands/DescribeDBClusterAutomatedBackupsCommand.ts
@@ -14,8 +14,7 @@ import {
   SMITHY_CONTEXT_KEY,
 } from "@smithy/types";
 
-import { DBClusterAutomatedBackupMessage } from "../models/models_0";
-import { DescribeDBClusterAutomatedBackupsMessage } from "../models/models_1";
+import { DBClusterAutomatedBackupMessage, DescribeDBClusterAutomatedBackupsMessage } from "../models/models_1";
 import {
   de_DescribeDBClusterAutomatedBackupsCommand,
   se_DescribeDBClusterAutomatedBackupsCommand,
diff --git a/clients/client-rds/src/commands/DescribeDBClustersCommand.ts b/clients/client-rds/src/commands/DescribeDBClustersCommand.ts
index f48e29b78bfc..5d071809c437 100644
--- a/clients/client-rds/src/commands/DescribeDBClustersCommand.ts
+++ b/clients/client-rds/src/commands/DescribeDBClustersCommand.ts
@@ -108,6 +108,14 @@ export interface DescribeDBClustersCommandOutput extends DBClusterMessage, __Met
  * //       ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //         "STRING_VALUE",
  * //       ],
+ * //       StatusInfos: [ // DBClusterStatusInfoList
+ * //         { // DBClusterStatusInfo
+ * //           StatusType: "STRING_VALUE",
+ * //           Normal: true || false,
+ * //           Status: "STRING_VALUE",
+ * //           Message: "STRING_VALUE",
+ * //         },
+ * //       ],
  * //       DBClusterMembers: [ // DBClusterMemberList
  * //         { // DBClusterMember
  * //           DBInstanceIdentifier: "STRING_VALUE",
@@ -156,6 +164,7 @@ export interface DescribeDBClustersCommandOutput extends DBClusterMessage, __Met
  * //       RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       DeletionProtection: true || false,
  * //       HttpEndpointEnabled: true || false,
@@ -204,6 +213,7 @@ export interface DescribeDBClustersCommandOutput extends DBClusterMessage, __Met
  * //         RdsCustomClusterConfiguration: {
  * //           InterconnectSubnetId: "STRING_VALUE",
  * //           TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //           ReplicaMode: "open-read-only" || "mounted",
  * //         },
  * //         Iops: Number("int"),
  * //         StorageType: "STRING_VALUE",
diff --git a/clients/client-rds/src/commands/FailoverDBClusterCommand.ts b/clients/client-rds/src/commands/FailoverDBClusterCommand.ts
index 244aa1784df0..8f49266501a3 100644
--- a/clients/client-rds/src/commands/FailoverDBClusterCommand.ts
+++ b/clients/client-rds/src/commands/FailoverDBClusterCommand.ts
@@ -105,6 +105,14 @@ export interface FailoverDBClusterCommandOutput extends FailoverDBClusterResult,
  * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //       "STRING_VALUE",
  * //     ],
+ * //     StatusInfos: [ // DBClusterStatusInfoList
+ * //       { // DBClusterStatusInfo
+ * //         StatusType: "STRING_VALUE",
+ * //         Normal: true || false,
+ * //         Status: "STRING_VALUE",
+ * //         Message: "STRING_VALUE",
+ * //       },
+ * //     ],
  * //     DBClusterMembers: [ // DBClusterMemberList
  * //       { // DBClusterMember
  * //         DBInstanceIdentifier: "STRING_VALUE",
@@ -153,6 +161,7 @@ export interface FailoverDBClusterCommandOutput extends FailoverDBClusterResult,
  * //     RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //       InterconnectSubnetId: "STRING_VALUE",
  * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //       ReplicaMode: "open-read-only" || "mounted",
  * //     },
  * //     DeletionProtection: true || false,
  * //     HttpEndpointEnabled: true || false,
@@ -201,6 +210,7 @@ export interface FailoverDBClusterCommandOutput extends FailoverDBClusterResult,
  * //       RdsCustomClusterConfiguration: {
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       Iops: Number("int"),
  * //       StorageType: "STRING_VALUE",
diff --git a/clients/client-rds/src/commands/ModifyDBClusterCommand.ts b/clients/client-rds/src/commands/ModifyDBClusterCommand.ts
index c84737c189c4..231ea9a7ccfa 100644
--- a/clients/client-rds/src/commands/ModifyDBClusterCommand.ts
+++ b/clients/client-rds/src/commands/ModifyDBClusterCommand.ts
@@ -157,6 +157,14 @@ export interface ModifyDBClusterCommandOutput extends ModifyDBClusterResult, __M
  * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //       "STRING_VALUE",
  * //     ],
+ * //     StatusInfos: [ // DBClusterStatusInfoList
+ * //       { // DBClusterStatusInfo
+ * //         StatusType: "STRING_VALUE",
+ * //         Normal: true || false,
+ * //         Status: "STRING_VALUE",
+ * //         Message: "STRING_VALUE",
+ * //       },
+ * //     ],
  * //     DBClusterMembers: [ // DBClusterMemberList
  * //       { // DBClusterMember
  * //         DBInstanceIdentifier: "STRING_VALUE",
@@ -205,6 +213,7 @@ export interface ModifyDBClusterCommandOutput extends ModifyDBClusterResult, __M
  * //     RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //       InterconnectSubnetId: "STRING_VALUE",
  * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //       ReplicaMode: "open-read-only" || "mounted",
  * //     },
  * //     DeletionProtection: true || false,
  * //     HttpEndpointEnabled: true || false,
@@ -253,6 +262,7 @@ export interface ModifyDBClusterCommandOutput extends ModifyDBClusterResult, __M
  * //       RdsCustomClusterConfiguration: {
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       Iops: Number("int"),
  * //       StorageType: "STRING_VALUE",
@@ -334,6 +344,9 @@ export interface ModifyDBClusterCommandOutput extends ModifyDBClusterResult, __M
  *  <p>The DB subnet group doesn't cover all Availability Zones after it's
  *             created because of users' change.</p>
  *
+ * @throws {@link OptionGroupNotFoundFault} (client fault)
+ *  <p>The specified option group could not be found.</p>
+ *
  * @throws {@link StorageQuotaExceededFault} (client fault)
  *  <p>The request would result in the user exceeding the allowed amount of storage
  *             available across all DB instances.</p>
diff --git a/clients/client-rds/src/commands/PromoteReadReplicaDBClusterCommand.ts b/clients/client-rds/src/commands/PromoteReadReplicaDBClusterCommand.ts
index 2f3014361f87..b2743d3fa019 100644
--- a/clients/client-rds/src/commands/PromoteReadReplicaDBClusterCommand.ts
+++ b/clients/client-rds/src/commands/PromoteReadReplicaDBClusterCommand.ts
@@ -88,6 +88,14 @@ export interface PromoteReadReplicaDBClusterCommandOutput extends PromoteReadRep
  * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //       "STRING_VALUE",
  * //     ],
+ * //     StatusInfos: [ // DBClusterStatusInfoList
+ * //       { // DBClusterStatusInfo
+ * //         StatusType: "STRING_VALUE",
+ * //         Normal: true || false,
+ * //         Status: "STRING_VALUE",
+ * //         Message: "STRING_VALUE",
+ * //       },
+ * //     ],
  * //     DBClusterMembers: [ // DBClusterMemberList
  * //       { // DBClusterMember
  * //         DBInstanceIdentifier: "STRING_VALUE",
@@ -136,6 +144,7 @@ export interface PromoteReadReplicaDBClusterCommandOutput extends PromoteReadRep
  * //     RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //       InterconnectSubnetId: "STRING_VALUE",
  * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //       ReplicaMode: "open-read-only" || "mounted",
  * //     },
  * //     DeletionProtection: true || false,
  * //     HttpEndpointEnabled: true || false,
@@ -184,6 +193,7 @@ export interface PromoteReadReplicaDBClusterCommandOutput extends PromoteReadRep
  * //       RdsCustomClusterConfiguration: {
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       Iops: Number("int"),
  * //       StorageType: "STRING_VALUE",
diff --git a/clients/client-rds/src/commands/RebootDBClusterCommand.ts b/clients/client-rds/src/commands/RebootDBClusterCommand.ts
index 944c0dae99c2..cf085a0a5a9d 100644
--- a/clients/client-rds/src/commands/RebootDBClusterCommand.ts
+++ b/clients/client-rds/src/commands/RebootDBClusterCommand.ts
@@ -98,6 +98,14 @@ export interface RebootDBClusterCommandOutput extends RebootDBClusterResult, __M
  * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //       "STRING_VALUE",
  * //     ],
+ * //     StatusInfos: [ // DBClusterStatusInfoList
+ * //       { // DBClusterStatusInfo
+ * //         StatusType: "STRING_VALUE",
+ * //         Normal: true || false,
+ * //         Status: "STRING_VALUE",
+ * //         Message: "STRING_VALUE",
+ * //       },
+ * //     ],
  * //     DBClusterMembers: [ // DBClusterMemberList
  * //       { // DBClusterMember
  * //         DBInstanceIdentifier: "STRING_VALUE",
@@ -146,6 +154,7 @@ export interface RebootDBClusterCommandOutput extends RebootDBClusterResult, __M
  * //     RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //       InterconnectSubnetId: "STRING_VALUE",
  * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //       ReplicaMode: "open-read-only" || "mounted",
  * //     },
  * //     DeletionProtection: true || false,
  * //     HttpEndpointEnabled: true || false,
@@ -194,6 +203,7 @@ export interface RebootDBClusterCommandOutput extends RebootDBClusterResult, __M
  * //       RdsCustomClusterConfiguration: {
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       Iops: Number("int"),
  * //       StorageType: "STRING_VALUE",
diff --git a/clients/client-rds/src/commands/RestoreDBClusterFromS3Command.ts b/clients/client-rds/src/commands/RestoreDBClusterFromS3Command.ts
index 88f8969472e8..7b99fbf82f05 100644
--- a/clients/client-rds/src/commands/RestoreDBClusterFromS3Command.ts
+++ b/clients/client-rds/src/commands/RestoreDBClusterFromS3Command.ts
@@ -154,6 +154,14 @@ export interface RestoreDBClusterFromS3CommandOutput extends RestoreDBClusterFro
  * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //       "STRING_VALUE",
  * //     ],
+ * //     StatusInfos: [ // DBClusterStatusInfoList
+ * //       { // DBClusterStatusInfo
+ * //         StatusType: "STRING_VALUE",
+ * //         Normal: true || false,
+ * //         Status: "STRING_VALUE",
+ * //         Message: "STRING_VALUE",
+ * //       },
+ * //     ],
  * //     DBClusterMembers: [ // DBClusterMemberList
  * //       { // DBClusterMember
  * //         DBInstanceIdentifier: "STRING_VALUE",
@@ -202,6 +210,7 @@ export interface RestoreDBClusterFromS3CommandOutput extends RestoreDBClusterFro
  * //     RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //       InterconnectSubnetId: "STRING_VALUE",
  * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //       ReplicaMode: "open-read-only" || "mounted",
  * //     },
  * //     DeletionProtection: true || false,
  * //     HttpEndpointEnabled: true || false,
@@ -250,6 +259,7 @@ export interface RestoreDBClusterFromS3CommandOutput extends RestoreDBClusterFro
  * //       RdsCustomClusterConfiguration: {
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       Iops: Number("int"),
  * //       StorageType: "STRING_VALUE",
diff --git a/clients/client-rds/src/commands/RestoreDBClusterFromSnapshotCommand.ts b/clients/client-rds/src/commands/RestoreDBClusterFromSnapshotCommand.ts
index bb491ab0d435..308b7465ff77 100644
--- a/clients/client-rds/src/commands/RestoreDBClusterFromSnapshotCommand.ts
+++ b/clients/client-rds/src/commands/RestoreDBClusterFromSnapshotCommand.ts
@@ -117,6 +117,7 @@ export interface RestoreDBClusterFromSnapshotCommandOutput
  *   RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  *     InterconnectSubnetId: "STRING_VALUE",
  *     TransitGatewayMulticastDomainId: "STRING_VALUE",
+ *     ReplicaMode: "open-read-only" || "mounted",
  *   },
  * };
  * const command = new RestoreDBClusterFromSnapshotCommand(input);
@@ -160,6 +161,14 @@ export interface RestoreDBClusterFromSnapshotCommandOutput
  * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //       "STRING_VALUE",
  * //     ],
+ * //     StatusInfos: [ // DBClusterStatusInfoList
+ * //       { // DBClusterStatusInfo
+ * //         StatusType: "STRING_VALUE",
+ * //         Normal: true || false,
+ * //         Status: "STRING_VALUE",
+ * //         Message: "STRING_VALUE",
+ * //       },
+ * //     ],
  * //     DBClusterMembers: [ // DBClusterMemberList
  * //       { // DBClusterMember
  * //         DBInstanceIdentifier: "STRING_VALUE",
@@ -208,6 +217,7 @@ export interface RestoreDBClusterFromSnapshotCommandOutput
  * //     RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //       InterconnectSubnetId: "STRING_VALUE",
  * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //       ReplicaMode: "open-read-only" || "mounted",
  * //     },
  * //     DeletionProtection: true || false,
  * //     HttpEndpointEnabled: true || false,
@@ -256,6 +266,7 @@ export interface RestoreDBClusterFromSnapshotCommandOutput
  * //       RdsCustomClusterConfiguration: {
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       Iops: Number("int"),
  * //       StorageType: "STRING_VALUE",
diff --git a/clients/client-rds/src/commands/RestoreDBClusterToPointInTimeCommand.ts b/clients/client-rds/src/commands/RestoreDBClusterToPointInTimeCommand.ts
index 5b3a318954b9..b43a4ee6f041 100644
--- a/clients/client-rds/src/commands/RestoreDBClusterToPointInTimeCommand.ts
+++ b/clients/client-rds/src/commands/RestoreDBClusterToPointInTimeCommand.ts
@@ -119,6 +119,7 @@ export interface RestoreDBClusterToPointInTimeCommandOutput
  *   RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  *     InterconnectSubnetId: "STRING_VALUE",
  *     TransitGatewayMulticastDomainId: "STRING_VALUE",
+ *     ReplicaMode: "open-read-only" || "mounted",
  *   },
  * };
  * const command = new RestoreDBClusterToPointInTimeCommand(input);
@@ -162,6 +163,14 @@ export interface RestoreDBClusterToPointInTimeCommandOutput
  * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //       "STRING_VALUE",
  * //     ],
+ * //     StatusInfos: [ // DBClusterStatusInfoList
+ * //       { // DBClusterStatusInfo
+ * //         StatusType: "STRING_VALUE",
+ * //         Normal: true || false,
+ * //         Status: "STRING_VALUE",
+ * //         Message: "STRING_VALUE",
+ * //       },
+ * //     ],
  * //     DBClusterMembers: [ // DBClusterMemberList
  * //       { // DBClusterMember
  * //         DBInstanceIdentifier: "STRING_VALUE",
@@ -210,6 +219,7 @@ export interface RestoreDBClusterToPointInTimeCommandOutput
  * //     RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //       InterconnectSubnetId: "STRING_VALUE",
  * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //       ReplicaMode: "open-read-only" || "mounted",
  * //     },
  * //     DeletionProtection: true || false,
  * //     HttpEndpointEnabled: true || false,
@@ -258,6 +268,7 @@ export interface RestoreDBClusterToPointInTimeCommandOutput
  * //       RdsCustomClusterConfiguration: {
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       Iops: Number("int"),
  * //       StorageType: "STRING_VALUE",
diff --git a/clients/client-rds/src/commands/StartDBClusterCommand.ts b/clients/client-rds/src/commands/StartDBClusterCommand.ts
index daf4ed0f617e..41200e5cfd7a 100644
--- a/clients/client-rds/src/commands/StartDBClusterCommand.ts
+++ b/clients/client-rds/src/commands/StartDBClusterCommand.ts
@@ -95,6 +95,14 @@ export interface StartDBClusterCommandOutput extends StartDBClusterResult, __Met
  * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //       "STRING_VALUE",
  * //     ],
+ * //     StatusInfos: [ // DBClusterStatusInfoList
+ * //       { // DBClusterStatusInfo
+ * //         StatusType: "STRING_VALUE",
+ * //         Normal: true || false,
+ * //         Status: "STRING_VALUE",
+ * //         Message: "STRING_VALUE",
+ * //       },
+ * //     ],
  * //     DBClusterMembers: [ // DBClusterMemberList
  * //       { // DBClusterMember
  * //         DBInstanceIdentifier: "STRING_VALUE",
@@ -143,6 +151,7 @@ export interface StartDBClusterCommandOutput extends StartDBClusterResult, __Met
  * //     RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //       InterconnectSubnetId: "STRING_VALUE",
  * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //       ReplicaMode: "open-read-only" || "mounted",
  * //     },
  * //     DeletionProtection: true || false,
  * //     HttpEndpointEnabled: true || false,
@@ -191,6 +200,7 @@ export interface StartDBClusterCommandOutput extends StartDBClusterResult, __Met
  * //       RdsCustomClusterConfiguration: {
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       Iops: Number("int"),
  * //       StorageType: "STRING_VALUE",
diff --git a/clients/client-rds/src/commands/StopDBClusterCommand.ts b/clients/client-rds/src/commands/StopDBClusterCommand.ts
index 6f335a45ce3b..2c9b2e5c319f 100644
--- a/clients/client-rds/src/commands/StopDBClusterCommand.ts
+++ b/clients/client-rds/src/commands/StopDBClusterCommand.ts
@@ -96,6 +96,14 @@ export interface StopDBClusterCommandOutput extends StopDBClusterResult, __Metad
  * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
  * //       "STRING_VALUE",
  * //     ],
+ * //     StatusInfos: [ // DBClusterStatusInfoList
+ * //       { // DBClusterStatusInfo
+ * //         StatusType: "STRING_VALUE",
+ * //         Normal: true || false,
+ * //         Status: "STRING_VALUE",
+ * //         Message: "STRING_VALUE",
+ * //       },
+ * //     ],
  * //     DBClusterMembers: [ // DBClusterMemberList
  * //       { // DBClusterMember
  * //         DBInstanceIdentifier: "STRING_VALUE",
@@ -144,6 +152,7 @@ export interface StopDBClusterCommandOutput extends StopDBClusterResult, __Metad
  * //     RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
  * //       InterconnectSubnetId: "STRING_VALUE",
  * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //       ReplicaMode: "open-read-only" || "mounted",
  * //     },
  * //     DeletionProtection: true || false,
  * //     HttpEndpointEnabled: true || false,
@@ -192,6 +201,7 @@ export interface StopDBClusterCommandOutput extends StopDBClusterResult, __Metad
  * //       RdsCustomClusterConfiguration: {
  * //         InterconnectSubnetId: "STRING_VALUE",
  * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
+ * //         ReplicaMode: "open-read-only" || "mounted",
  * //       },
  * //       Iops: Number("int"),
  * //       StorageType: "STRING_VALUE",
diff --git a/clients/client-rds/src/models/models_0.ts b/clients/client-rds/src/models/models_0.ts
index 6ab65f7589ac..9b1ff1732f95 100644
--- a/clients/client-rds/src/models/models_0.ts
+++ b/clients/client-rds/src/models/models_0.ts
@@ -4173,6 +4173,20 @@ export class Ec2ImagePropertiesNotSupportedFault extends __BaseException {
   }
 }
 
+/**
+ * @public
+ * @enum
+ */
+export const ReplicaMode = {
+  MOUNTED: "mounted",
+  OPEN_READ_ONLY: "open-read-only",
+} as const;
+
+/**
+ * @public
+ */
+export type ReplicaMode = (typeof ReplicaMode)[keyof typeof ReplicaMode];
+
 /**
  * @public
  * <p>Reserved for future use.</p>
@@ -4189,6 +4203,12 @@ export interface RdsCustomClusterConfiguration {
    * <p>Reserved for future use.</p>
    */
   TransitGatewayMulticastDomainId?: string;
+
+  /**
+   * @public
+   * <p>Reserved for future use.</p>
+   */
+  ReplicaMode?: ReplicaMode;
 }
 
 /**
@@ -5478,6 +5498,36 @@ export interface ServerlessV2ScalingConfigurationInfo {
   MaxCapacity?: number;
 }
 
+/**
+ * @public
+ * <p>Reserved for future use.</p>
+ */
+export interface DBClusterStatusInfo {
+  /**
+   * @public
+   * <p>Reserved for future use.</p>
+   */
+  StatusType?: string;
+
+  /**
+   * @public
+   * <p>Reserved for future use.</p>
+   */
+  Normal?: boolean;
+
+  /**
+   * @public
+   * <p>Reserved for future use.</p>
+   */
+  Status?: string;
+
+  /**
+   * @public
+   * <p>Reserved for future use.</p>
+   */
+  Message?: string;
+}
+
 /**
  * @public
  * <p>Contains the details of an Amazon Aurora DB cluster or Multi-AZ DB cluster.</p>
@@ -5670,6 +5720,12 @@ export interface DBCluster {
    */
   ReadReplicaIdentifiers?: string[];
 
+  /**
+   * @public
+   * <p>Reserved for future use.</p>
+   */
+  StatusInfos?: DBClusterStatusInfo[];
+
   /**
    * @public
    * <p>The list of DB instances that make up the DB cluster.</p>
@@ -6201,6 +6257,27 @@ export class InsufficientStorageClusterCapacityFault extends __BaseException {
   }
 }
 
+/**
+ * @public
+ * <p>The DBSubnetGroup doesn't belong to the same VPC as that of an existing
+ *             cross-region read replica of the same source instance.</p>
+ */
+export class InvalidDBSubnetGroupFault extends __BaseException {
+  readonly name: "InvalidDBSubnetGroupFault" = "InvalidDBSubnetGroupFault";
+  readonly $fault: "client" = "client";
+  /**
+   * @internal
+   */
+  constructor(opts: __ExceptionOptionType<InvalidDBSubnetGroupFault, __BaseException>) {
+    super({
+      name: "InvalidDBSubnetGroupFault",
+      $fault: "client",
+      ...opts,
+    });
+    Object.setPrototypeOf(this, InvalidDBSubnetGroupFault.prototype);
+  }
+}
+
 /**
  * @public
  * <p>The DB subnet group cannot be deleted because it's in use.</p>
@@ -8552,20 +8629,6 @@ export interface PendingModifiedValues {
   MultiTenant?: boolean;
 }
 
-/**
- * @public
- * @enum
- */
-export const ReplicaMode = {
-  MOUNTED: "mounted",
-  OPEN_READ_ONLY: "open-read-only",
-} as const;
-
-/**
- * @public
- */
-export type ReplicaMode = (typeof ReplicaMode)[keyof typeof ReplicaMode];
-
 /**
  * @public
  * <p>Provides a list of status information for a DB instance.</p>
@@ -10078,27 +10141,6 @@ export class DBSubnetGroupNotAllowedFault extends __BaseException {
   }
 }
 
-/**
- * @public
- * <p>The DBSubnetGroup doesn't belong to the same VPC as that of an existing
- *             cross-region read replica of the same source instance.</p>
- */
-export class InvalidDBSubnetGroupFault extends __BaseException {
-  readonly name: "InvalidDBSubnetGroupFault" = "InvalidDBSubnetGroupFault";
-  readonly $fault: "client" = "client";
-  /**
-   * @internal
-   */
-  constructor(opts: __ExceptionOptionType<InvalidDBSubnetGroupFault, __BaseException>) {
-    super({
-      name: "InvalidDBSubnetGroupFault",
-      $fault: "client",
-      ...opts,
-    });
-    Object.setPrototypeOf(this, InvalidDBSubnetGroupFault.prototype);
-  }
-}
-
 /**
  * @public
  * <p></p>
@@ -14037,24 +14079,6 @@ export interface DescribeCertificatesMessage {
   Marker?: string;
 }
 
-/**
- * @public
- */
-export interface DBClusterAutomatedBackupMessage {
-  /**
-   * @public
-   * <p>The pagination token provided in the previous request. If this parameter is specified the response includes only
-   *             records beyond the marker, up to <code>MaxRecords</code>.</p>
-   */
-  Marker?: string;
-
-  /**
-   * @public
-   * <p>A list of <code>DBClusterAutomatedBackup</code> backups.</p>
-   */
-  DBClusterAutomatedBackups?: DBClusterAutomatedBackup[];
-}
-
 /**
  * @internal
  */
diff --git a/clients/client-rds/src/models/models_1.ts b/clients/client-rds/src/models/models_1.ts
index 221f2e4e2c67..ca9631df03cc 100644
--- a/clients/client-rds/src/models/models_1.ts
+++ b/clients/client-rds/src/models/models_1.ts
@@ -10,6 +10,7 @@ import {
   BlueGreenDeployment,
   Certificate,
   DBCluster,
+  DBClusterAutomatedBackup,
   DBClusterBacktrack,
   DBClusterEndpoint,
   DBClusterParameterGroup,
@@ -44,6 +45,24 @@ import {
 } from "./models_0";
 import { RDSServiceException as __BaseException } from "./RDSServiceException";
 
+/**
+ * @public
+ */
+export interface DBClusterAutomatedBackupMessage {
+  /**
+   * @public
+   * <p>The pagination token provided in the previous request. If this parameter is specified the response includes only
+   *             records beyond the marker, up to <code>MaxRecords</code>.</p>
+   */
+  Marker?: string;
+
+  /**
+   * @public
+   * <p>A list of <code>DBClusterAutomatedBackup</code> backups.</p>
+   */
+  DBClusterAutomatedBackups?: DBClusterAutomatedBackup[];
+}
+
 /**
  * @public
  */
diff --git a/clients/client-rds/src/protocols/Aws_query.ts b/clients/client-rds/src/protocols/Aws_query.ts
index d63637f9d462..312b6a322d1c 100644
--- a/clients/client-rds/src/protocols/Aws_query.ts
+++ b/clients/client-rds/src/protocols/Aws_query.ts
@@ -601,7 +601,6 @@ import {
   DBCluster,
   DBClusterAlreadyExistsFault,
   DBClusterAutomatedBackup,
-  DBClusterAutomatedBackupMessage,
   DBClusterAutomatedBackupNotFoundFault,
   DBClusterAutomatedBackupQuotaExceededFault,
   DBClusterBacktrack,
@@ -621,6 +620,7 @@ import {
   DBClusterSnapshot,
   DBClusterSnapshotAlreadyExistsFault,
   DBClusterSnapshotNotFoundFault,
+  DBClusterStatusInfo,
   DBEngineVersion,
   DBInstance,
   DBInstanceAlreadyExistsFault,
@@ -807,6 +807,7 @@ import {
   CloudwatchLogsExportConfiguration,
   ConnectionPoolConfiguration,
   ConnectionPoolConfigurationInfo,
+  DBClusterAutomatedBackupMessage,
   DBClusterBacktrackMessage,
   DBClusterBacktrackNotFoundFault,
   DBClusterCapacityInfo,
@@ -4534,6 +4535,9 @@ const de_CreateDBClusterCommandError = async (
     case "InvalidDBInstanceState":
     case "com.amazonaws.rds#InvalidDBInstanceStateFault":
       throw await de_InvalidDBInstanceStateFaultRes(parsedOutput, context);
+    case "InvalidDBSubnetGroupFault":
+    case "com.amazonaws.rds#InvalidDBSubnetGroupFault":
+      throw await de_InvalidDBSubnetGroupFaultRes(parsedOutput, context);
     case "InvalidDBSubnetGroupStateFault":
     case "com.amazonaws.rds#InvalidDBSubnetGroupStateFault":
       throw await de_InvalidDBSubnetGroupStateFaultRes(parsedOutput, context);
@@ -4549,6 +4553,9 @@ const de_CreateDBClusterCommandError = async (
     case "KMSKeyNotAccessibleFault":
     case "com.amazonaws.rds#KMSKeyNotAccessibleFault":
       throw await de_KMSKeyNotAccessibleFaultRes(parsedOutput, context);
+    case "OptionGroupNotFoundFault":
+    case "com.amazonaws.rds#OptionGroupNotFoundFault":
+      throw await de_OptionGroupNotFoundFaultRes(parsedOutput, context);
     case "StorageQuotaExceeded":
     case "com.amazonaws.rds#StorageQuotaExceededFault":
       throw await de_StorageQuotaExceededFaultRes(parsedOutput, context);
@@ -9060,6 +9067,9 @@ const de_ModifyDBClusterCommandError = async (
     case "InvalidVPCNetworkStateFault":
     case "com.amazonaws.rds#InvalidVPCNetworkStateFault":
       throw await de_InvalidVPCNetworkStateFaultRes(parsedOutput, context);
+    case "OptionGroupNotFoundFault":
+    case "com.amazonaws.rds#OptionGroupNotFoundFault":
+      throw await de_OptionGroupNotFoundFaultRes(parsedOutput, context);
     case "StorageQuotaExceeded":
     case "com.amazonaws.rds#StorageQuotaExceededFault":
       throw await de_StorageQuotaExceededFaultRes(parsedOutput, context);
@@ -18797,6 +18807,9 @@ const se_RdsCustomClusterConfiguration = (input: RdsCustomClusterConfiguration,
   if (input.TransitGatewayMulticastDomainId != null) {
     entries["TransitGatewayMulticastDomainId"] = input.TransitGatewayMulticastDomainId;
   }
+  if (input.ReplicaMode != null) {
+    entries["ReplicaMode"] = input.ReplicaMode;
+  }
   return entries;
 };
 
@@ -21308,6 +21321,14 @@ const de_DBCluster = (output: any, context: __SerdeContext): DBCluster => {
       context
     );
   }
+  if (output.StatusInfos === "") {
+    contents.StatusInfos = [];
+  } else if (output["StatusInfos"] !== undefined && output["StatusInfos"]["DBClusterStatusInfo"] !== undefined) {
+    contents.StatusInfos = de_DBClusterStatusInfoList(
+      __getArrayIfSingleItem(output["StatusInfos"]["DBClusterStatusInfo"]),
+      context
+    );
+  }
   if (output.DBClusterMembers === "") {
     contents.DBClusterMembers = [];
   } else if (output["DBClusterMembers"] !== undefined && output["DBClusterMembers"]["DBClusterMember"] !== undefined) {
@@ -22342,6 +22363,37 @@ const de_DBClusterSnapshotNotFoundFault = (output: any, context: __SerdeContext)
   return contents;
 };
 
+/**
+ * deserializeAws_queryDBClusterStatusInfo
+ */
+const de_DBClusterStatusInfo = (output: any, context: __SerdeContext): DBClusterStatusInfo => {
+  const contents: any = {};
+  if (output["StatusType"] !== undefined) {
+    contents.StatusType = __expectString(output["StatusType"]);
+  }
+  if (output["Normal"] !== undefined) {
+    contents.Normal = __parseBoolean(output["Normal"]);
+  }
+  if (output["Status"] !== undefined) {
+    contents.Status = __expectString(output["Status"]);
+  }
+  if (output["Message"] !== undefined) {
+    contents.Message = __expectString(output["Message"]);
+  }
+  return contents;
+};
+
+/**
+ * deserializeAws_queryDBClusterStatusInfoList
+ */
+const de_DBClusterStatusInfoList = (output: any, context: __SerdeContext): DBClusterStatusInfo[] => {
+  return (output || [])
+    .filter((e: any) => e != null)
+    .map((entry: any) => {
+      return de_DBClusterStatusInfo(entry, context);
+    });
+};
+
 /**
  * deserializeAws_queryDBEngineVersion
  */
@@ -27318,6 +27370,9 @@ const de_RdsCustomClusterConfiguration = (output: any, context: __SerdeContext):
   if (output["TransitGatewayMulticastDomainId"] !== undefined) {
     contents.TransitGatewayMulticastDomainId = __expectString(output["TransitGatewayMulticastDomainId"]);
   }
+  if (output["ReplicaMode"] !== undefined) {
+    contents.ReplicaMode = __expectString(output["ReplicaMode"]);
+  }
   return contents;
 };
 
diff --git a/codegen/sdk-codegen/aws-models/rds.json b/codegen/sdk-codegen/aws-models/rds.json
index d6a23afb3829..9031fe2d37e9 100644
--- a/codegen/sdk-codegen/aws-models/rds.json
+++ b/codegen/sdk-codegen/aws-models/rds.json
@@ -3039,7 +3039,7 @@
         }
       ],
       "traits": {
-        "smithy.api#documentation": "<p>Copies the specified DB cluster parameter group.</p>",
+        "smithy.api#documentation": "<p>Copies the specified DB cluster parameter group.</p>\n         <note>\n            <p>You can't copy a default DB cluster parameter group. Instead, create a new custom DB cluster parameter group, which copies\n                the default parameters and values for the specified DB cluster parameter group family.</p>\n         </note>",
         "smithy.api#examples": [
           {
             "title": "To copy a DB cluster parameter group",
@@ -3250,7 +3250,7 @@
         }
       ],
       "traits": {
-        "smithy.api#documentation": "<p>Copies the specified DB parameter group.</p>",
+        "smithy.api#documentation": "<p>Copies the specified DB parameter group.</p>\n         <note>\n            <p>You can't copy a default DB parameter group. Instead, create a new custom DB parameter group, which copies the default\n                parameters and values for the specified DB parameter group family.</p>\n         </note>",
         "smithy.api#examples": [
           {
             "title": "To copy a DB parameter group",
@@ -3841,6 +3841,9 @@
         {
           "target": "com.amazonaws.rds#InvalidDBInstanceStateFault"
         },
+        {
+          "target": "com.amazonaws.rds#InvalidDBSubnetGroupFault"
+        },
         {
           "target": "com.amazonaws.rds#InvalidDBSubnetGroupStateFault"
         },
@@ -3856,6 +3859,9 @@
         {
           "target": "com.amazonaws.rds#KMSKeyNotAccessibleFault"
         },
+        {
+          "target": "com.amazonaws.rds#OptionGroupNotFoundFault"
+        },
         {
           "target": "com.amazonaws.rds#StorageQuotaExceededFault"
         }
@@ -6911,6 +6917,12 @@
             "smithy.api#documentation": "<p>Contains one or more identifiers of the read replicas associated with this DB\n            cluster.</p>"
           }
         },
+        "StatusInfos": {
+          "target": "com.amazonaws.rds#DBClusterStatusInfoList",
+          "traits": {
+            "smithy.api#documentation": "<p>Reserved for future use.</p>"
+          }
+        },
         "DBClusterMembers": {
           "target": "com.amazonaws.rds#DBClusterMemberList",
           "traits": {
@@ -8315,6 +8327,47 @@
         "smithy.api#httpError": 404
       }
     },
+    "com.amazonaws.rds#DBClusterStatusInfo": {
+      "type": "structure",
+      "members": {
+        "StatusType": {
+          "target": "com.amazonaws.rds#String",
+          "traits": {
+            "smithy.api#documentation": "<p>Reserved for future use.</p>"
+          }
+        },
+        "Normal": {
+          "target": "com.amazonaws.rds#Boolean",
+          "traits": {
+            "smithy.api#documentation": "<p>Reserved for future use.</p>"
+          }
+        },
+        "Status": {
+          "target": "com.amazonaws.rds#String",
+          "traits": {
+            "smithy.api#documentation": "<p>Reserved for future use.</p>"
+          }
+        },
+        "Message": {
+          "target": "com.amazonaws.rds#String",
+          "traits": {
+            "smithy.api#documentation": "<p>Reserved for future use.</p>"
+          }
+        }
+      },
+      "traits": {
+        "smithy.api#documentation": "<p>Reserved for future use.</p>"
+      }
+    },
+    "com.amazonaws.rds#DBClusterStatusInfoList": {
+      "type": "list",
+      "member": {
+        "target": "com.amazonaws.rds#DBClusterStatusInfo",
+        "traits": {
+          "smithy.api#xmlName": "DBClusterStatusInfo"
+        }
+      }
+    },
     "com.amazonaws.rds#DBEngineVersion": {
       "type": "structure",
       "members": {
@@ -19949,6 +20002,9 @@
         {
           "target": "com.amazonaws.rds#InvalidVPCNetworkStateFault"
         },
+        {
+          "target": "com.amazonaws.rds#OptionGroupNotFoundFault"
+        },
         {
           "target": "com.amazonaws.rds#StorageQuotaExceededFault"
         },
@@ -23618,6 +23674,12 @@
           "traits": {
             "smithy.api#documentation": "<p>Reserved for future use.</p>"
           }
+        },
+        "ReplicaMode": {
+          "target": "com.amazonaws.rds#ReplicaMode",
+          "traits": {
+            "smithy.api#documentation": "<p>Reserved for future use.</p>"
+          }
         }
       },
       "traits": {