diff --git a/clients/client-secrets-manager/src/models/models_0.ts b/clients/client-secrets-manager/src/models/models_0.ts
index 4859b6bd67b5..25ece8ae3ed9 100644
--- a/clients/client-secrets-manager/src/models/models_0.ts
+++ b/clients/client-secrets-manager/src/models/models_0.ts
@@ -966,7 +966,7 @@ export interface DescribeSecretResponse {
   KmsKeyId?: string;
 
   /**
-   * <p>Specifies whether automatic rotation is turned on for this secret.</p>
+   * <p>Specifies whether automatic rotation is turned on for this secret.  If the secret has never been configured for rotation, Secrets Manager returns null.</p>
    *          <p>To turn on rotation, use <a>RotateSecret</a>. To turn off
    *       rotation, use <a>CancelRotateSecret</a>.</p>
    * @public
@@ -1216,7 +1216,7 @@ export interface GetResourcePolicyResponse {
  */
 export interface GetSecretValueRequest {
   /**
-   * <p>The ARN or name of the secret to retrieve.</p>
+   * <p>The ARN or name of the secret to retrieve. To retrieve a secret from another account, you must use an ARN.</p>
    *          <p>For an ARN, we recommend that you specify a complete ARN rather
    *       than a partial ARN. See <a href="https://docs.aws.amazon.com/secretsmanager/latest/userguide/troubleshoot.html#ARN_secretnamehyphen">Finding a secret from a partial ARN</a>.</p>
    * @public
@@ -1946,7 +1946,7 @@ export interface RotateSecretRequest {
    * <p>Specifies whether to rotate the secret immediately or wait until the next scheduled rotation window.
    *     The rotation schedule is defined in <a>RotateSecretRequest$RotationRules</a>.</p>
    *          <p>For secrets that use a Lambda rotation function to rotate, if you don't immediately rotate the secret, Secrets Manager tests the rotation configuration by running the
-   *     <a href="https://docs.aws.amazon.com/secretsmanager/latest/userguide/rotate-secrets_how.html">
+   *     <a href="https://docs.aws.amazon.com/secretsmanager/latest/userguide/rotate-secrets_lambda-functions.html#rotate-secrets_lambda-functions-code">
    *                <code>testSecret</code>
    *       step</a> of the Lambda rotation function. The test creates an <code>AWSPENDING</code> version of the secret and then removes it.</p>
    *          <p>By default, Secrets Manager rotates the secret immediately.</p>
@@ -2207,7 +2207,7 @@ export interface UpdateSecretVersionStageResponse {
  */
 export interface ValidateResourcePolicyRequest {
   /**
-   * <p>This field is reserved for internal use.</p>
+   * <p>The ARN or name of the secret with the resource-based policy you want to validate.</p>
    * @public
    */
   SecretId?: string;
diff --git a/codegen/sdk-codegen/aws-models/secrets-manager.json b/codegen/sdk-codegen/aws-models/secrets-manager.json
index 6ec71ecbc839..b80e973da4af 100644
--- a/codegen/sdk-codegen/aws-models/secrets-manager.json
+++ b/codegen/sdk-codegen/aws-models/secrets-manager.json
@@ -712,7 +712,7 @@
           "target": "com.amazonaws.secretsmanager#RotationEnabledType",
           "traits": {
             "smithy.api#default": null,
-            "smithy.api#documentation": "<p>Specifies whether automatic rotation is turned on for this secret.</p>\n         <p>To turn on rotation, use <a>RotateSecret</a>. To turn off\n      rotation, use <a>CancelRotateSecret</a>.</p>"
+            "smithy.api#documentation": "<p>Specifies whether automatic rotation is turned on for this secret.  If the secret has never been configured for rotation, Secrets Manager returns null.</p>\n         <p>To turn on rotation, use <a>RotateSecret</a>. To turn off\n      rotation, use <a>CancelRotateSecret</a>.</p>"
           }
         },
         "RotationLambdaARN": {
@@ -1215,7 +1215,7 @@
         "SecretId": {
           "target": "com.amazonaws.secretsmanager#SecretIdType",
           "traits": {
-            "smithy.api#documentation": "<p>The ARN or name of the secret to retrieve.</p>\n         <p>For an ARN, we recommend that you specify a complete ARN rather \n      than a partial ARN. See <a href=\"https://docs.aws.amazon.com/secretsmanager/latest/userguide/troubleshoot.html#ARN_secretnamehyphen\">Finding a secret from a partial ARN</a>.</p>",
+            "smithy.api#documentation": "<p>The ARN or name of the secret to retrieve. To retrieve a secret from another account, you must use an ARN.</p>\n         <p>For an ARN, we recommend that you specify a complete ARN rather \n      than a partial ARN. See <a href=\"https://docs.aws.amazon.com/secretsmanager/latest/userguide/troubleshoot.html#ARN_secretnamehyphen\">Finding a secret from a partial ARN</a>.</p>",
             "smithy.api#required": {}
           }
         },
@@ -2408,7 +2408,7 @@
           "target": "com.amazonaws.secretsmanager#BooleanType",
           "traits": {
             "smithy.api#default": null,
-            "smithy.api#documentation": "<p>Specifies whether to rotate the secret immediately or wait until the next scheduled rotation window. \n    The rotation schedule is defined in <a>RotateSecretRequest$RotationRules</a>.</p>\n         <p>For secrets that use a Lambda rotation function to rotate, if you don't immediately rotate the secret, Secrets Manager tests the rotation configuration by running the \n    <a href=\"https://docs.aws.amazon.com/secretsmanager/latest/userguide/rotate-secrets_how.html\">\n               <code>testSecret</code> \n      step</a> of the Lambda rotation function. The test creates an <code>AWSPENDING</code> version of the secret and then removes it.</p>\n         <p>By default, Secrets Manager rotates the secret immediately.</p>"
+            "smithy.api#documentation": "<p>Specifies whether to rotate the secret immediately or wait until the next scheduled rotation window. \n    The rotation schedule is defined in <a>RotateSecretRequest$RotationRules</a>.</p>\n         <p>For secrets that use a Lambda rotation function to rotate, if you don't immediately rotate the secret, Secrets Manager tests the rotation configuration by running the \n    <a href=\"https://docs.aws.amazon.com/secretsmanager/latest/userguide/rotate-secrets_lambda-functions.html#rotate-secrets_lambda-functions-code\">\n               <code>testSecret</code> \n      step</a> of the Lambda rotation function. The test creates an <code>AWSPENDING</code> version of the secret and then removes it.</p>\n         <p>By default, Secrets Manager rotates the secret immediately.</p>"
           }
         }
       },
@@ -3420,7 +3420,7 @@
         "SecretId": {
           "target": "com.amazonaws.secretsmanager#SecretIdType",
           "traits": {
-            "smithy.api#documentation": "<p>This field is reserved for internal use.</p>"
+            "smithy.api#documentation": "<p>The ARN or name of the secret with the resource-based policy you want to validate.</p>"
           }
         },
         "ResourcePolicy": {