# ModifyVpcEndpointServicePermissions
<a name="API_ModifyVpcEndpointServicePermissions"></a>

Modifies the permissions for your VPC endpoint service. You can add or remove permissions for service consumers (Amazon Web Services accounts, users, and IAM roles) to connect to your endpoint service. Principal ARNs with path components aren't supported.

If you grant permissions to all principals, the service is public. Any users who know the name of a public service can send a request to attach an endpoint. If the service does not require manual approval, attachments are automatically approved.

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

The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see [Common Query Parameters](CommonParameters.md).

 **AddAllowedPrincipals.N**   
The Amazon Resource Names (ARN) of the principals. Permissions are granted to the principals in this list. To grant permissions to all principals, specify an asterisk (\$1).  
Type: Array of strings  
Required: No

 **DryRun**   
Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is `DryRunOperation`. Otherwise, it is `UnauthorizedOperation`.  
Type: Boolean  
Required: No

 **RemoveAllowedPrincipals.N**   
The Amazon Resource Names (ARN) of the principals. Permissions are revoked for principals in this list.  
Type: Array of strings  
Required: No

 **ServiceId**   
The ID of the service.  
Type: String  
Required: Yes

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

The following elements are returned by the service.

 **addedPrincipalSet**   
Information about the added principals.  
Type: Array of [AddedPrincipal](API_AddedPrincipal.md) objects

 **requestId**   
The ID of the request.  
Type: String

 **return**   
Returns `true` if the request succeeds; otherwise, it returns an error.  
Type: Boolean

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

For information about the errors that are common to all actions, see [Common client error codes](errors-overview.md#CommonErrors).

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

### Example
<a name="API_ModifyVpcEndpointServicePermissions_Example_1"></a>

This example permits all principals in Amazon Web Services account `123456789012` to connect to your endpoint service `vpce-svc-03d5ebb7d9579a2b3`.

#### Sample Request
<a name="API_ModifyVpcEndpointServicePermissions_Example_1_Request"></a>

```
https://ec2.amazonaws.com/?Action=ModifyVpcEndpointServicePermissions
&ServiceId=vpce-svc-03d5ebb7d9579a2b3
&AddAllowedPrincipals.1=arn:aws:iam::123456789012:root
&AUTHPARAMS
```

#### Sample Response
<a name="API_ModifyVpcEndpointServicePermissions_Example_1_Response"></a>

```
<ModifyVpcEndpointServicePermissionsResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/">
    <requestId>08d80840-f750-42db-a6f8-2cd32example</requestId>
    <return>true</return>
</ModifyVpcEndpointServicePermissionsResponse>
```

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

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/ec2-2016-11-15/ModifyVpcEndpointServicePermissions) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/ec2-2016-11-15/ModifyVpcEndpointServicePermissions) 
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/ec2-2016-11-15/ModifyVpcEndpointServicePermissions) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/ec2-2016-11-15/ModifyVpcEndpointServicePermissions) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ec2-2016-11-15/ModifyVpcEndpointServicePermissions) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/ec2-2016-11-15/ModifyVpcEndpointServicePermissions) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/ec2-2016-11-15/ModifyVpcEndpointServicePermissions) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/ec2-2016-11-15/ModifyVpcEndpointServicePermissions) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/ec2-2016-11-15/ModifyVpcEndpointServicePermissions) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ec2-2016-11-15/ModifyVpcEndpointServicePermissions)