# ClientTlsCertificate
<a name="API_ClientTlsCertificate"></a>

An object that represents the client's certificate.

## Contents
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**Important**  
This data type is a UNION, so only one of the following members can be specified when used or returned.

 ** file **   <a name="appmesh-Type-ClientTlsCertificate-file"></a>
An object that represents a local file certificate. The certificate must meet specific requirements and you must have proxy authorization enabled. For more information, see [Transport Layer Security (TLS)](https://docs.aws.amazon.com/app-mesh/latest/userguide/tls.html).  
Type: [ListenerTlsFileCertificate](API_ListenerTlsFileCertificate.md) object  
Required: No

 ** sds **   <a name="appmesh-Type-ClientTlsCertificate-sds"></a>
A reference to an object that represents a client's TLS Secret Discovery Service certificate.  
Type: [ListenerTlsSdsCertificate](API_ListenerTlsSdsCertificate.md) object  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/appmesh-2019-01-25/ClientTlsCertificate) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/appmesh-2019-01-25/ClientTlsCertificate) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/appmesh-2019-01-25/ClientTlsCertificate)