The following list of request parameters only lists interface request parameters and some public parameters, For a complete list of public parameters see public request parameters.

Parameter name	Required	Allow NULL	Type	Description
Action	Yes	No	String	Public parameter, The value of this interface: EnableVpnGatewaySSLClientCert
Version	Yes	No	String	Public parameter, The value of this interface: 2017-03-12
Region	No	No	String	Public parameter,Regional information A list of supported geographies is available through the DescribeRegions interface
VpnGatewayId	Yes	No	String	VPN gateway ID, which is in the format of vpngw-goa5jz6j. Example: vpngw-1u2xtmbz
VpcId	Yes	No	String	VPC Instance ID Example: vpc-napeigw5
SSLVpnClientId	Yes	No	String	SSL VPN Client Instance ID Example: vpnc-1dac13ac

3. Output Parameters

Parameter name	Type	Description
TaskId	Int64	taskid Example: jkt45
RequestId	String	Unique request id, Each request will return. The RequestId of the request needs to be provided when locating the problem.

4. Error Code

There is no error code related to business logic for this interface, For other error codes, see public ErrorCode.