diff --git a/clients/client-rds/src/models/models_0.ts b/clients/client-rds/src/models/models_0.ts
index 3682b5279abb..9d6940e5baa3 100644
--- a/clients/client-rds/src/models/models_0.ts
+++ b/clients/client-rds/src/models/models_0.ts
@@ -7826,11 +7826,19 @@ export interface CreateDBInstanceMessage {
 
   /**
    * <p>The license model information for this DB instance.</p>
+   *          <note>
+   *             <p>License models for RDS for Db2 require additional configuration. The Bring Your
+   *                 Own License (BYOL) model requires a custom parameter group. The Db2 license through
+   *                 Amazon Web Services Marketplace model requires an Amazon Web Services Marketplace subscription. For more
+   *                 information, see <a href="https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/db2-licensing.html">RDS for Db2 licensing
+   *                     options</a> in the <i>Amazon RDS User Guide</i>.</p>
+   *             <p>The default for RDS for Db2 is <code>bring-your-own-license</code>.</p>
+   *          </note>
    *          <p>This setting doesn't apply to Amazon Aurora or RDS Custom DB instances.</p>
    *          <p>Valid Values:</p>
    *          <ul>
    *             <li>
-   *                <p>RDS for Db2 - <code>bring-your-own-license</code>
+   *                <p>RDS for Db2 - <code>bring-your-own-license | marketplace-license</code>
    *                </p>
    *             </li>
    *             <li>
@@ -9185,7 +9193,8 @@ export interface DBInstance {
   ReplicaMode?: ReplicaMode;
 
   /**
-   * <p>The license model information for this DB instance. This setting doesn't apply to RDS Custom DB instances.</p>
+   * <p>The license model information for this DB instance. This setting doesn't apply to
+   *             Amazon Aurora or RDS Custom DB instances.</p>
    * @public
    */
   LicenseModel?: string;
diff --git a/clients/client-rds/src/models/models_1.ts b/clients/client-rds/src/models/models_1.ts
index d40f4d48a298..de46f0dc7a71 100644
--- a/clients/client-rds/src/models/models_1.ts
+++ b/clients/client-rds/src/models/models_1.ts
@@ -12484,10 +12484,42 @@ export interface RestoreDBInstanceFromDBSnapshotMessage {
 
   /**
    * <p>License model information for the restored DB instance.</p>
-   *          <p>This setting doesn't apply to RDS Custom.</p>
-   *          <p>Default: Same as source.</p>
-   *          <p>Valid Values:  <code>license-included</code> | <code>bring-your-own-license</code> | <code>general-public-license</code>
-   *          </p>
+   *          <note>
+   *             <p>License models for RDS for Db2 require additional configuration. The Bring Your
+   *                 Own License (BYOL) model requires a custom parameter group. The Db2 license through
+   *                 Amazon Web Services Marketplace model requires an Amazon Web Services Marketplace subscription. For more
+   *                 information, see <a href="https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/db2-licensing.html">RDS for Db2 licensing
+   *                     options</a> in the <i>Amazon RDS User Guide</i>.</p>
+   *          </note>
+   *          <p>This setting doesn't apply to Amazon Aurora or RDS Custom DB instances.</p>
+   *          <p>Valid Values:</p>
+   *          <ul>
+   *             <li>
+   *                <p>RDS for Db2 - <code>bring-your-own-license | marketplace-license</code>
+   *                </p>
+   *             </li>
+   *             <li>
+   *                <p>RDS for MariaDB - <code>general-public-license</code>
+   *                </p>
+   *             </li>
+   *             <li>
+   *                <p>RDS for Microsoft SQL Server - <code>license-included</code>
+   *                </p>
+   *             </li>
+   *             <li>
+   *                <p>RDS for MySQL - <code>general-public-license</code>
+   *                </p>
+   *             </li>
+   *             <li>
+   *                <p>RDS for Oracle - <code>bring-your-own-license | license-included</code>
+   *                </p>
+   *             </li>
+   *             <li>
+   *                <p>RDS for PostgreSQL - <code>postgresql-license</code>
+   *                </p>
+   *             </li>
+   *          </ul>
+   *          <p>Default: Same as the source.</p>
    * @public
    */
   LicenseModel?: string;
@@ -13780,9 +13812,41 @@ export interface RestoreDBInstanceToPointInTimeMessage {
 
   /**
    * <p>The license model information for the restored DB instance.</p>
-   *          <p>This setting doesn't apply to RDS Custom.</p>
-   *          <p>Valid Values: <code>license-included</code> | <code>bring-your-own-license</code> | <code>general-public-license</code>
-   *          </p>
+   *          <note>
+   *             <p>License models for RDS for Db2 require additional configuration. The Bring Your
+   *                 Own License (BYOL) model requires a custom parameter group. The Db2 license through
+   *                 Amazon Web Services Marketplace model requires an Amazon Web Services Marketplace subscription. For more
+   *                 information, see <a href="https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/db2-licensing.html">RDS for Db2 licensing
+   *                     options</a> in the <i>Amazon RDS User Guide</i>.</p>
+   *          </note>
+   *          <p>This setting doesn't apply to Amazon Aurora or RDS Custom DB instances.</p>
+   *          <p>Valid Values:</p>
+   *          <ul>
+   *             <li>
+   *                <p>RDS for Db2 - <code>bring-your-own-license | marketplace-license</code>
+   *                </p>
+   *             </li>
+   *             <li>
+   *                <p>RDS for MariaDB - <code>general-public-license</code>
+   *                </p>
+   *             </li>
+   *             <li>
+   *                <p>RDS for Microsoft SQL Server - <code>license-included</code>
+   *                </p>
+   *             </li>
+   *             <li>
+   *                <p>RDS for MySQL - <code>general-public-license</code>
+   *                </p>
+   *             </li>
+   *             <li>
+   *                <p>RDS for Oracle - <code>bring-your-own-license | license-included</code>
+   *                </p>
+   *             </li>
+   *             <li>
+   *                <p>RDS for PostgreSQL - <code>postgresql-license</code>
+   *                </p>
+   *             </li>
+   *          </ul>
    *          <p>Default: Same as the source.</p>
    * @public
    */
diff --git a/codegen/sdk-codegen/aws-models/rds.json b/codegen/sdk-codegen/aws-models/rds.json
index a876d061a699..745f531b680c 100644
--- a/codegen/sdk-codegen/aws-models/rds.json
+++ b/codegen/sdk-codegen/aws-models/rds.json
@@ -4991,7 +4991,7 @@
         "LicenseModel": {
           "target": "com.amazonaws.rds#String",
           "traits": {
-            "smithy.api#documentation": "<p>The license model information for this DB instance.</p>\n         <p>This setting doesn't apply to Amazon Aurora or RDS Custom DB instances.</p>\n         <p>Valid Values:</p>\n         <ul>\n            <li>\n               <p>RDS for Db2 - <code>bring-your-own-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for MariaDB - <code>general-public-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for Microsoft SQL Server - <code>license-included</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for MySQL - <code>general-public-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for Oracle - <code>bring-your-own-license | license-included</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for PostgreSQL - <code>postgresql-license</code>\n               </p>\n            </li>\n         </ul>"
+            "smithy.api#documentation": "<p>The license model information for this DB instance.</p>\n         <note>\n            <p>License models for RDS for Db2 require additional configuration. The Bring Your\n                Own License (BYOL) model requires a custom parameter group. The Db2 license through\n                Amazon Web Services Marketplace model requires an Amazon Web Services Marketplace subscription. For more\n                information, see <a href=\"https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/db2-licensing.html\">RDS for Db2 licensing\n                    options</a> in the <i>Amazon RDS User Guide</i>.</p>\n            <p>The default for RDS for Db2 is <code>bring-your-own-license</code>.</p>\n         </note>\n         <p>This setting doesn't apply to Amazon Aurora or RDS Custom DB instances.</p>\n         <p>Valid Values:</p>\n         <ul>\n            <li>\n               <p>RDS for Db2 - <code>bring-your-own-license | marketplace-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for MariaDB - <code>general-public-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for Microsoft SQL Server - <code>license-included</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for MySQL - <code>general-public-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for Oracle - <code>bring-your-own-license | license-included</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for PostgreSQL - <code>postgresql-license</code>\n               </p>\n            </li>\n         </ul>"
           }
         },
         "Iops": {
@@ -9072,7 +9072,7 @@
         "LicenseModel": {
           "target": "com.amazonaws.rds#String",
           "traits": {
-            "smithy.api#documentation": "<p>The license model information for this DB instance. This setting doesn't apply to RDS Custom DB instances.</p>"
+            "smithy.api#documentation": "<p>The license model information for this DB instance. This setting doesn't apply to\n            Amazon Aurora or RDS Custom DB instances.</p>"
           }
         },
         "Iops": {
@@ -27684,7 +27684,7 @@
         "LicenseModel": {
           "target": "com.amazonaws.rds#String",
           "traits": {
-            "smithy.api#documentation": "<p>License model information for the restored DB instance.</p>\n         <p>This setting doesn't apply to RDS Custom.</p>\n         <p>Default: Same as source.</p>\n         <p>Valid Values:  <code>license-included</code> | <code>bring-your-own-license</code> | <code>general-public-license</code>\n         </p>"
+            "smithy.api#documentation": "<p>License model information for the restored DB instance.</p>\n         <note>\n            <p>License models for RDS for Db2 require additional configuration. The Bring Your\n                Own License (BYOL) model requires a custom parameter group. The Db2 license through\n                Amazon Web Services Marketplace model requires an Amazon Web Services Marketplace subscription. For more\n                information, see <a href=\"https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/db2-licensing.html\">RDS for Db2 licensing\n                    options</a> in the <i>Amazon RDS User Guide</i>.</p>\n         </note>\n         <p>This setting doesn't apply to Amazon Aurora or RDS Custom DB instances.</p>\n         <p>Valid Values:</p>\n         <ul>\n            <li>\n               <p>RDS for Db2 - <code>bring-your-own-license | marketplace-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for MariaDB - <code>general-public-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for Microsoft SQL Server - <code>license-included</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for MySQL - <code>general-public-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for Oracle - <code>bring-your-own-license | license-included</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for PostgreSQL - <code>postgresql-license</code>\n               </p>\n            </li>\n         </ul>\n         <p>Default: Same as the source.</p>"
           }
         },
         "DBName": {
@@ -28556,7 +28556,7 @@
         "LicenseModel": {
           "target": "com.amazonaws.rds#String",
           "traits": {
-            "smithy.api#documentation": "<p>The license model information for the restored DB instance.</p>\n         <p>This setting doesn't apply to RDS Custom.</p>\n         <p>Valid Values: <code>license-included</code> | <code>bring-your-own-license</code> | <code>general-public-license</code>\n         </p>\n         <p>Default: Same as the source.</p>"
+            "smithy.api#documentation": "<p>The license model information for the restored DB instance.</p>\n         <note>\n            <p>License models for RDS for Db2 require additional configuration. The Bring Your\n                Own License (BYOL) model requires a custom parameter group. The Db2 license through\n                Amazon Web Services Marketplace model requires an Amazon Web Services Marketplace subscription. For more\n                information, see <a href=\"https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/db2-licensing.html\">RDS for Db2 licensing\n                    options</a> in the <i>Amazon RDS User Guide</i>.</p>\n         </note>\n         <p>This setting doesn't apply to Amazon Aurora or RDS Custom DB instances.</p>\n         <p>Valid Values:</p>\n         <ul>\n            <li>\n               <p>RDS for Db2 - <code>bring-your-own-license | marketplace-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for MariaDB - <code>general-public-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for Microsoft SQL Server - <code>license-included</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for MySQL - <code>general-public-license</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for Oracle - <code>bring-your-own-license | license-included</code>\n               </p>\n            </li>\n            <li>\n               <p>RDS for PostgreSQL - <code>postgresql-license</code>\n               </p>\n            </li>\n         </ul>\n         <p>Default: Same as the source.</p>"
           }
         },
         "DBName": {