# UpdateRule
<a name="API_UpdateRule"></a>

Updates a specified rule for the listener. You can't modify a default listener rule. To modify a default listener rule, use `UpdateListener`.

## Request Syntax
<a name="API_UpdateRule_RequestSyntax"></a>

```
PATCH /services/serviceIdentifier/listeners/listenerIdentifier/rules/ruleIdentifier HTTP/1.1
Content-type: application/json

{
   "action": { ... },
   "match": { ... },
   "priority": number
}
```

## URI Request Parameters
<a name="API_UpdateRule_RequestParameters"></a>

The request uses the following URI parameters.

 ** [listenerIdentifier](#API_UpdateRule_RequestSyntax) **   <a name="vpclattice-UpdateRule-request-uri-listenerIdentifier"></a>
The ID or ARN of the listener.  
Length Constraints: Minimum length of 20. Maximum length of 2048.  
Pattern: `((listener-[0-9a-z]{17})|(^arn:[a-z0-9\-]+:vpc-lattice:[a-zA-Z0-9\-]+:\d{12}:service/svc-[0-9a-z]{17}/listener/listener-[0-9a-z]{17}$))`   
Required: Yes

 ** [ruleIdentifier](#API_UpdateRule_RequestSyntax) **   <a name="vpclattice-UpdateRule-request-uri-ruleIdentifier"></a>
The ID or ARN of the rule.  
Length Constraints: Minimum length of 20. Maximum length of 2048.  
Pattern: `((rule-[0-9a-z]{17})|(^arn:[a-z0-9\-]+:vpc-lattice:[a-zA-Z0-9\-]+:\d{12}:service/svc-[0-9a-z]{17}/listener/listener-[0-9a-z]{17}/rule/rule-[0-9a-z]{17}$))`   
Required: Yes

 ** [serviceIdentifier](#API_UpdateRule_RequestSyntax) **   <a name="vpclattice-UpdateRule-request-uri-serviceIdentifier"></a>
The ID or ARN of the service.  
Length Constraints: Minimum length of 17. Maximum length of 2048.  
Pattern: `((svc-[0-9a-z]{17})|(arn:[a-z0-9\-]+:vpc-lattice:[a-zA-Z0-9\-]+:\d{12}:service/svc-[0-9a-z]{17}))`   
Required: Yes

## Request Body
<a name="API_UpdateRule_RequestBody"></a>

The request accepts the following data in JSON format.

 ** [action](#API_UpdateRule_RequestSyntax) **   <a name="vpclattice-UpdateRule-request-action"></a>
Information about the action for the specified listener rule.  
Type: [RuleAction](API_RuleAction.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.  
Required: No

 ** [match](#API_UpdateRule_RequestSyntax) **   <a name="vpclattice-UpdateRule-request-match"></a>
The rule match.  
Type: [RuleMatch](API_RuleMatch.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.  
Required: No

 ** [priority](#API_UpdateRule_RequestSyntax) **   <a name="vpclattice-UpdateRule-request-priority"></a>
The rule priority. A listener can't have multiple rules with the same priority.  
Type: Integer  
Valid Range: Minimum value of 1. Maximum value of 2000.  
Required: No

## Response Syntax
<a name="API_UpdateRule_ResponseSyntax"></a>

```
HTTP/1.1 200
Content-type: application/json

{
   "action": { ... },
   "arn": "string",
   "id": "string",
   "isDefault": boolean,
   "match": { ... },
   "name": "string",
   "priority": number
}
```

## Response Elements
<a name="API_UpdateRule_ResponseElements"></a>

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

 ** [action](#API_UpdateRule_ResponseSyntax) **   <a name="vpclattice-UpdateRule-response-action"></a>
Information about the action for the specified listener rule.  
Type: [RuleAction](API_RuleAction.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.

 ** [arn](#API_UpdateRule_ResponseSyntax) **   <a name="vpclattice-UpdateRule-response-arn"></a>
The Amazon Resource Name (ARN) of the listener.  
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 2048.  
Pattern: `arn:[a-z0-9\-]+:vpc-lattice:[a-zA-Z0-9\-]+:\d{12}:service/svc-[0-9a-z]{17}/listener/listener-[0-9a-z]{17}/rule/rule-[0-9a-z]{17}` 

 ** [id](#API_UpdateRule_ResponseSyntax) **   <a name="vpclattice-UpdateRule-response-id"></a>
The ID of the listener.  
Type: String  
Length Constraints: Minimum length of 5. Maximum length of 22.  
Pattern: `rule-[0-9a-z]{17}` 

 ** [isDefault](#API_UpdateRule_ResponseSyntax) **   <a name="vpclattice-UpdateRule-response-isDefault"></a>
Indicates whether this is the default rule.  
Type: Boolean

 ** [match](#API_UpdateRule_ResponseSyntax) **   <a name="vpclattice-UpdateRule-response-match"></a>
The rule match.  
Type: [RuleMatch](API_RuleMatch.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.

 ** [name](#API_UpdateRule_ResponseSyntax) **   <a name="vpclattice-UpdateRule-response-name"></a>
The name of the listener.  
Type: String  
Length Constraints: Minimum length of 3. Maximum length of 63.  
Pattern: `(?!rule-)(?![-])(?!.*[-]$)(?!.*[-]{2})[a-z0-9-]+` 

 ** [priority](#API_UpdateRule_ResponseSyntax) **   <a name="vpclattice-UpdateRule-response-priority"></a>
The rule priority.  
Type: Integer  
Valid Range: Minimum value of 1. Maximum value of 2000.

## Errors
<a name="API_UpdateRule_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** AccessDeniedException **   
The user does not have sufficient access to perform this action.  
HTTP Status Code: 403

 ** ConflictException **   
The request conflicts with the current state of the resource. Updating or deleting a resource can cause an inconsistent state.    
 ** resourceId **   
The resource ID.  
 ** resourceType **   
The resource type.
HTTP Status Code: 409

 ** InternalServerException **   
An unexpected error occurred while processing the request.    
 ** retryAfterSeconds **   
The number of seconds to wait before retrying.
HTTP Status Code: 500

 ** ResourceNotFoundException **   
The request references a resource that does not exist.    
 ** resourceId **   
The resource ID.  
 ** resourceType **   
The resource type.
HTTP Status Code: 404

 ** ServiceQuotaExceededException **   
The request would cause a service quota to be exceeded.    
 ** quotaCode **   
The ID of the service quota that was exceeded.  
 ** resourceId **   
The resource ID.  
 ** resourceType **   
The resource type.  
 ** serviceCode **   
The service code.
HTTP Status Code: 402

 ** ThrottlingException **   
The limit on the number of requests per second was exceeded.    
 ** quotaCode **   
The ID of the service quota that was exceeded.  
 ** retryAfterSeconds **   
The number of seconds to wait before retrying.  
 ** serviceCode **   
The service code.
HTTP Status Code: 429

 ** ValidationException **   
The input does not satisfy the constraints specified by an AWS service.    
 ** fieldList **   
The fields that failed validation.  
 ** reason **   
The reason.
HTTP Status Code: 400

## See Also
<a name="API_UpdateRule_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/vpc-lattice-2022-11-30/UpdateRule) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/vpc-lattice-2022-11-30/UpdateRule) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/vpc-lattice-2022-11-30/UpdateRule) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/vpc-lattice-2022-11-30/UpdateRule) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/vpc-lattice-2022-11-30/UpdateRule) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/vpc-lattice-2022-11-30/UpdateRule) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/vpc-lattice-2022-11-30/UpdateRule) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/vpc-lattice-2022-11-30/UpdateRule) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/vpc-lattice-2022-11-30/UpdateRule) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/vpc-lattice-2022-11-30/UpdateRule)