# ModifyCacheSubnetGroup
<a name="API_ModifyCacheSubnetGroup"></a>

Modifies an existing cache subnet group.

## Request Parameters
<a name="API_ModifyCacheSubnetGroup_RequestParameters"></a>

 For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

 ** CacheSubnetGroupName **   
The name for the cache subnet group. This value is stored as a lowercase string.  
Constraints: Must contain no more than 255 alphanumeric characters or hyphens.  
Example: `mysubnetgroup`   
Type: String  
Required: Yes

 ** CacheSubnetGroupDescription **   
A description of the cache subnet group.  
Type: String  
Required: No

 **SubnetIds.SubnetIdentifier.N**   
The EC2 subnet IDs for the cache subnet group.  
Type: Array of strings  
Required: No

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

The following element is returned by the service.

 ** CacheSubnetGroup **   
Represents the output of one of the following operations:  
+  `CreateCacheSubnetGroup` 
+  `ModifyCacheSubnetGroup` 
Type: [CacheSubnetGroup](API_CacheSubnetGroup.md) object

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

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

 ** CacheSubnetGroupNotFoundFault **   
The requested cache subnet group name does not refer to an existing cache subnet group.  
HTTP Status Code: 400

 ** CacheSubnetQuotaExceededFault **   
The request cannot be processed because it would exceed the allowed number of subnets in a cache subnet group.  
HTTP Status Code: 400

 ** InvalidSubnet **   
An invalid subnet identifier was specified.  
HTTP Status Code: 400

 ** SubnetInUse **   
The requested subnet is being used by another cache subnet group.  
HTTP Status Code: 400

 ** SubnetNotAllowedFault **   
At least one subnet ID does not match the other subnet IDs. This mismatch typically occurs when a user sets one subnet ID to a regional Availability Zone and a different one to an outpost. Or when a user sets the subnet ID to an Outpost when not subscribed on this service.  
HTTP Status Code: 400

## Examples
<a name="API_ModifyCacheSubnetGroup_Examples"></a>

### ModifyCacheSubnetGroup
<a name="API_ModifyCacheSubnetGroup_Example_1"></a>

This example illustrates one usage of ModifyCacheSubnetGroup.

#### Sample Request
<a name="API_ModifyCacheSubnetGroup_Example_1_Request"></a>

```
https://elasticache.amazonaws.com/
   ?Action=ModifyCacheSubnetGroup
   &CacheSubnetGroupName=myCachesubnetgroup
   &CacheSubnetGroupDescription=My%20modified%20CacheSubnetGroup
   &Version=2015-02-02
   &SignatureVersion=4
   &SignatureMethod=HmacSHA256
   &Timestamp=20150202T192317Z
   &X-Amz-Credential=<credential>
```

#### Sample Response
<a name="API_ModifyCacheSubnetGroup_Example_1_Response"></a>

```
<ModifyCacheSubnetGroupResponse xmlns="http://elasticache.amazonaws.com/doc/2015-02-02/">
    <ModifyCacheSubnetGroupResult>
            <CacheSubnetGroup>
                <VpcId>990524496922</VpcId>
                <CacheSubnetGroupDescription>My modified CacheSubnetGroup</CacheSubnetGroupDescription>
                <CacheSubnetGroupName>myCachesubnetgroup</CacheSubnetGroupName>
                <Subnets>
                    <Subnet>
                        <SubnetStatus>Active</SubnetStatus>
                        <SubnetIdentifier>subnet-7c5b4115</SubnetIdentifier>
                        <SubnetAvailabilityZone>
                            <Name>us-west-2c</Name>
                        </SubnetAvailabilityZone>
                    </Subnet>
                    <Subnet>
                        <SubnetStatus>Active</SubnetStatus>
                        <SubnetIdentifier>subnet-7b5b4112</SubnetIdentifier>
                        <SubnetAvailabilityZone>
                            <Name>us-west-2b</Name>
                        </SubnetAvailabilityZone>
                    </Subnet>
                    <Subnet>
                        <SubnetStatus>Active</SubnetStatus>
                        <SubnetIdentifier>subnet-3ea6bd57</SubnetIdentifier>
                        <SubnetAvailabilityZone>
                            <Name>us-west-2c</Name>
                        </SubnetAvailabilityZone>
                    </Subnet>
                </Subnets>
            </CacheSubnetGroup>
        </ModifyCacheSubnetGroupResult>
        <ResponseMetadata>
            <RequestId>ed662948-a57b-11df-9e38-7ffab86c801f</RequestId>
        </ResponseMetadata>
    </ModifyCacheSubnetGroupResponse>
```

## See Also
<a name="API_ModifyCacheSubnetGroup_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/elasticache-2015-02-02/ModifyCacheSubnetGroup) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/elasticache-2015-02-02/ModifyCacheSubnetGroup) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/elasticache-2015-02-02/ModifyCacheSubnetGroup) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/elasticache-2015-02-02/ModifyCacheSubnetGroup) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticache-2015-02-02/ModifyCacheSubnetGroup) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/elasticache-2015-02-02/ModifyCacheSubnetGroup) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/elasticache-2015-02-02/ModifyCacheSubnetGroup) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/elasticache-2015-02-02/ModifyCacheSubnetGroup) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/elasticache-2015-02-02/ModifyCacheSubnetGroup) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/elasticache-2015-02-02/ModifyCacheSubnetGroup)